1)When Peter bought presents for John?
2)When John arrived in London?
3)Where did we see a rare parrot yesterday?
Whose letter did I answer last week?здесь скорее ошибка не John is, а John's т.е. его
5)What did Mare decide to change?
6)Where did my friends go last month?
7)When did Nick finish school?
8) Who knew a lot of tales in her childhood?
8)What Mary was known in her childhood?
8) When did Mary know a lot of tales?
9)Whom did Kate visit yesterday?
10)How many trees did children plant last year?
10)When did children planted 10 trees?