я не могу понять, как выполнить и тому, кто

В скобках – правильный вариант, то что подчеркнуто – убрать!
1. Was (Did) he play tennis last week?
2. Did you see Tom at an (the) end of the month?
3. Did he played (play) tennis yesterday?
4. Did she likes (like) to swim?
5. Did she be (Was she) in London last week
6. Do they celebrated (Did they celebrate) the holiday last year.
7. Did they can (Can they) swim well?
8. They couldn't come, didn't (could) they?
9. He was busy , didn't (wasn't ) he?
10. She got up at 7 o,сlock, did (didn't) she?

Exotic pets.

Many people keep pets.Some families prefer "traditional" kinds of animals,among which cats,dogs,hamsters,parrots are the most typical.

Other people have exotic pets,which may be snakes,monkeys and so on.

The most popular pets in Russia are dogs and cats, but smaller animals such as rabbits,guinea pigs,white mice and somethimes cages birds are more popular among children.

I love all the animals!They are our friends and we enjoy spending time together.I thing people may keep exotic pets, but they must watching and walked for them.Exotic pets are very dangerous!