根据括号内的要求改写句子，每空一词。
1. Jack did well in maths. (对画线部分提问)
________ ________ Jack ________ in maths?
2. Do these students often sing the English song? (变成被动语态)
________ the English song often ________ by these students?
3. At the age of four, she began to learn dancing. (改写成复合句)
She began to learn dancing ________ ________ ________ ________.
4. She was so weak that she didn't catch up with others. (同义句转换)
She was ________ ________ ________ to catch up with others.
5. Shall we go out for a walk after supper? (同义句转换)
________ ________ ________ a walk after supper?
6. Neither of us has much time to write back to him. (同义句转换)
Both of us ________ ________ ________ ________ ________ his letter.
