Do you know where mississippi river is? a) an b) the c) - he twenty in a month a) will be b) am going to be c) is we go to peru next year. we`re not sure. a) might b) should c) probably that`s the woman son is an actor. a) who b) whose c) which this afternoon, we sandboarding. a) are going b) are going c)will i`m bored camping trips. let`s go on a safari. a) from b) of c) for перед вами такое , похожее на викторину. ответы я знаю, поэтому в этом не заключается. тут вы должны проявить свои знания и написать, объяснить мне почему тут именно этот вариант ответа. это нужно, и объясняйте, , понятно. заранее всем !

Do you know where the Mississippi River is?
THE is the definite article.   when you have ONE of something that is definite, you use THE.  there is only one mississippi river, so you must use 'the'.

'an' is an indefinite article, not appropriate. if you have one of something thats not specific such as 'an apple'. 

He will be twenty in a month.
'in a month' says this is in the future, so you need a future tense verb
'am' goes with 'I' always  (I am ...)
'is' is present tense, but you could say 'he is going to be twenty in a month'

We might go to Peru next year.  We're not sure.
'not sure' means it may not happen. 'might' is also uncertain
so 'should' means we need to do something

that's the woman whose son is an actor.
i am not sure why, just that this one is correct

This afternoon, we are going sandboarding
a) and b) are the same answer
'this afternoon' means future tense
'going to' states a plan or intention, where 'will' is used in a different sense, as in a promise or request for help

i'm bored of camping trips.  let's go on a safari
'for' is definitely wrong
i have heard 'from' used, but i suspect it is not proper grammar

извините за все английский, мой руский не достаточно хорошо.

From ancient times people were afraid of natural disasters. these unpredictable disasters killed thousands of people and destroy dozens of cities. it was called "the punishment of the gods". all of these is about the earthquakes. today we can explain what the earthquake is, why it occurs and even define the earthquake-prone areas. so, why do earthquakes happen? scientists say that the reason is the movement of tectonic plates of the earth, taking place because of the volcanic eruptions or underground explosions.  over the past decade we have seen a number of seismic disasters in japan, china, chile, thailand, mexico and in other countries all over the world. in other words, the strongest earthquakes with the disastrous consequences cannot be controlled by a man, but they can be highly predicted. nowadays there are many ways to reduce the damage to a minimum. we use special materials while constructing buildings or applying special architectural solutions as well as long-term or short-term forecasting of probable earthquakes. to conclude, today the earthquakes are much less threatening than fifty years ago. they are no longer considered as the punishment of the heaven, just like a natural phenomenon like rain or fog.

1. The first time the Romans invaded Britain in 55 BC.
2. Londinium was the original name of the British capital at the time of the Roman Empire. By 100 AD., the population of Londinium was about 60,000 people. 
3. The Romans left Britain in 410 AD. 
4. William the Conqueror invaded Britain in 1066. He build the White Tower for it to be used as the Keep for himself and his representatives. It was the strongest and the most secure part of the castle and could keep the Royal Family protected in times of civil disorder or invasions. 
5. The Great Fire of London began on September the 2nd, 1666 and it lasted for almost 5 days. One-third of London was destroyed by the fire. 
6. The Great Fire started at the bakery of Thomas Farriner on Pudding Lane. It may have been caused by a spark from his oven which he failed to put out. The fire then quickly spread out because London was very dry after a long, hot summer and a very strong wind blew the fire from house to house in the narrow streets. 
7. The official name is The United Kingdom of Great Britain and Northern Ireland.
8. When people outside of the UK say "Great Britain" they often mistakenly refer to just England. However, Great Britain refers to England, Scotland and Wales. 
9. Great Britain consists of England (the capital is London), Scotland (the capital is Edinburgh) and Wales (the capital is Cardiff).
10. The Strait of Dover is the narrowest point of the English Channel.
11. No, they are not. People who are born in Great Britain are either called British citizens or individually Scottish, English and Welsh depending on which of the three countries they come from. 
12. The Union Jack is the combination of the red cross of Saint George (patron saint of England),  the Cross of St Patrick (patron saint of Ireland) and the Saltire of Saint Andrew (patron saint of Scotland). It symbolises the union between the three kingdoms at the time. Wales is not included because at the time it was part of the Kingdom on England. The Union Jack is red, blue and white, there is the red cross on a white background which represents England (and Wales), the red diagonal cross on a white background which represents Northern Ireland and the white diagonal cross on a blue background which represents Scotland. 
13. The Commonwealth of Nations is the intergovernmental organisation of 52 member states, which are mainly former territories of the British Empire. The Head of the Commonwealth is Queen Elizabeth II. Member states have no legal obligation to one another. Instead, they are united by language, history, culture, free speech, human rights, and the rule of law.
14. The UK is a constitutional monarchy where a sovereign reigns but does not rule. This means that a monarch acts as head of state but the Parliament has the real power. 
15. In Great Britain laws are made by the Parliament. Bills start in either the House of Lords or House of Commons then they go through set stages of approval in both Houses before they can be signed off by the Queen and then they become Acts of Parliament (law).


ПЕРЕВОД НЕ ПОМЕСТИЛСЯ, его можно увидеть в вложение. 

Дополнение: Так как текста нет по которому нужно отвечать (если там один такст), рекомендую сравнить ответы со своими текстами и подправить по необходимости.