Marry (go) to the shop. my friends (play) on the piano present simple past simple future simple present contin past continues + future continues +

Marry goes to the shop. Marry doesn't go to the shop. Does Marry go to the shop?
Marry went to the shop. Marry didn't go to the shop. Did Marry go to the shop?
Marry will go to the shop. Marry won't go to the shop. Will Marry go to the shop?
Marry is going to the shop. Marry isn't going to the shop. Is Marry going to the shop?
Marry was going to the shop. Marry wasn't going to the shop. Was Marry going to the shop?
Marry will be going to the shop. Merry won't be going to the shop. Will Marry be going to the shop?

My friends play on the piano. My friends don't play on the piano. Do my friends play on the?piano.
My friends played on the piano. My friends didn't play on the piano. Did my friends play on the piano?
My friends will play on the piano. My friends won't play on the piano. Will my friends play on the piano?
My friends are playing on the piano. My friends aren't playing on the piano. Are my friends playing on the piano?
My friends were playing on the piano. My friends weren't playing on the piano. Were my friends playing on the piano?
My friends will be playing on the piano. My friends won't be playing on the piano. Will my friends be playing on the piano?

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1 These walls of

water can reach up to 100 feet high and cause widespread destruction when they reach shore.

2 Earthquakes on the sea floor are the usual cause of tsunamis.

3.Around 80 percent of tsunamis happen in the so-called "Ring of Fire" in the Pacific

4This is a volcanically active area were tectonic plate shifts and earthquakes are common. Underwater landslides and volcanic eruptions can also start tsunamis.

5People’s best defense against tsunamis is early warnings that allow people to evacuate areas near the ocean.

Did nothing always exist or was it invented? 'Nothing ' is zero or nought. It is a very useful idea and it is called by different names. In football, 0 refers as 'nil'. So we say : "Liverpool" has been beaten or two -nil ( 2-0) at home by 'Manchester United '.
When you are given marks in a test, you hope you will never get 'nought ' out of ten or twenty. When we talk about the temperature 'zero ' is used. We say: "It is freezing today, the temperature has dropped to five below zero ".
The most unusual name for 0 must be that which is used in tennis ' love '; where the scoring goes 15-love, 30- love and so on.
Not many people realize that 0 didn't always exist, but was something that had to be invented.
Until the sixteenth century , the number system used in Europe was the Roman system which was invented about two thousand years ago. The Roman system is not simple, for example the mark 'X' stands for ten, and 'C' refers to a hundred.
A much better number system had been invented by the Hindus earlier. The Hindu system was brought to Europe in AD 900 by the Arabs and sometimes is referred to as the 'Arabic system.' This system is built on a base of ten and all numbers are written with the digits; 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0.So as all schoolchildren know, 10 means 'ten' and 40 means 'four times ten'.