Complete questions and short answers for exercise 4.

1. Had you travelled by plane by the time you were 6? Yes, I had. / No, I hadn't. 2. Had he made many friends by the time he was 10? Yes, he had. / No, he hadn't. 3. Had she tried to roller-skate by the time she was 3? Yes, she had. / No, she hadn't. 4. Had it swum in the sea by the time it was 4? Yes, it had. / No, it hadn't. 5. Had we started school by the time we were 7? Yes, we had. / No, we hadn't. 6. Had you read many books by the time you were 8? Yes, I had. / No, I hadn't. 7. Had they begun to learn English by the time they were 5? Yes, they had. / No, they hadn't.