1 I've been having swimming lessons and now I can / could swim really well.2 Please could / should I use your mobile phone? Mine doesn't have any power.3 Sam could / ought to get a job instead of complaining about having no money.4 Okay, yes - you can / should leave five minutes early today, 5 Do you think I must / should tell Michael the truth about what happened?6 I can't / couldn't read until I was five years old.7 I'm sorry, but you can't / couldn't leave your car there.8 If you want to pass the exam, you can / ought to do some revision.9 I know John lived in Tokyo, but I don't think he can/ may speak Japanese.10 Tracy can / could sing really well now that she's had a few lessons.​

1. can

2. could

3. ought

4. can

5. should

6.couldn't

7. can't

8. ought

9. may

10. can

Объяснение:

вроде так

Maya Plisetskaya was born on 20th of November in1925, in Moscow. When she was young she wanted to become a dramatic actress like her mum. In addition, she loved to participate in different perfomances as a child. When she was five years old she first visited theatre and she was very impressed by a play of actors. Her first visit to the theatre, when she was five,  However, her destiny was to become a legend of ballet. As she wrote in her book, when she was already an adult, that ballet for her was work and her hobby was architecture. Maya Plisetskaya was the first woman who invented a jump in ballet terminology called  "ring". If I am not wrong, she was the first ballerina in the world who danced 70 years on the stage. She was a phenomenon. 

1. I once ( knew) a village teacher who (was) partially blind. He (had been deprived) of one eye as the result of infection. His blind eye (had been taken) out, and a glass one ( inserted) in its socket instead. One day the teacher ( needed) to leave his class of small children alone for half an hour or so. But he (was held) back by one consideration. The children of the class (were) really unruly. He ( knew) that if they (were left) alone for any length of time they (would become) violent and complaints (would be make) by their parents.
Suddenly he (was striken) by an idea. In a moment his glass eye (was taken) out of its socket, and ( placed) on the table.
“Now, children”, he said, “I (am going) out for a few minutes but you (will be observed) all the time by my eye. If anything (is done) which (has not been approved) by me it (will be seen) by my eye, and the child (will be punished) when I (return).
The children (were impressed) very much, and the teacher (went) off.
But when he ( returned) an hour later it ( seemed) that a hurricane (had passed) through the classroom. The teacher (was astounded). “Evidently”, he thought,”I (have been outwited). I wonder how”.
In the classroom the tables (were overturned), the walls ( spattered) with ink from ink-bombs which (had been thrown) during the battle which still (was being fought) out as a manifestation of high spirits. In fact, a good time (had been had) by all.
The teacher ( wondered) why the presence of his glass eye (was not  respected). He ( looked) round for it and ( saw) that it (was covered) by a hat.