Ответ:

1. Now it's half past twelve. 2. My watch is in good working order, my family keeps a close eye on it. 3. My watch can be up to a minute or half a minute behind. 4. My English lessons start at ten o'clock in the morning and also at twelve.

5. English classes end after forty-five minutes from the beginning of 6. Yesterday I went to bed at one in the morning, as the lessons were going on.

7. around the clock. But most often at seven in the morning and also at seven in the evening