Перевести на , . "один из предметов, который я выбрала для экзаменов это , потому что мне нравится этот предмет и я готова по нему больше, чем по или . второй предмет я еще не выбрала, но , возможно, им будет биология. я предпочитаю письменный тип экзамена. когда экзамен устный -я волнуюсь."

"One of the things that I have chosen for examinations is English, because I like the subject and I'm ready for it more than in physics or chemistry. The second thing I have not yet chosen, but perhaps it would be biology. I prefer to work exam type. When the oral exam -I worry.

"One of the thinks that I have chosen for examinations is English,becauce I like the subject and I'm ready for it more than physics or chemistry.The second thing I have not yet chosen,but perhaps it would biology.I prefer to work exam type.When the oral exam - I warry"

I was so nervous about the exam that I couldn’t sleep.
c) anxious

The situation is awful for all of us.
b) terrible

Their happiness made Anne feel even more miserable.
c) unhappy

Staring at a computer screen all day can be very tiring, can’t it Mary?
d) exhausting

It was a typical English summer – rain every second day!
d) normal

She was too frightened to look out of the plane.
d) scared

So many days are routine and uninteresting, especially in winter.
c) dull

Don’t be silly!
c) ridiculous

What a tiresome being is a man who is fond of talking.
b) annoying

How can she be so cheerful at six o'clock in the morning?
b) alive

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.