按要求完成下面各句。每空一词。
1. Martin used to give his mother a lot of trouble. (改为否定句)
Martin _____ _____ to give his mother a lot of trouble.
2. To keep healthy, more and more people prefer walking to driving. (同义句转换)
To keep healthy, more and more people would walk _____ drive.
3. She learns English by listening to tapes. (对划线部分提问)
_____ she learn English ?
4. His parents didn't catch his words at once. (改为被动语态)
His words _____ _____ by his parents at once.
5. Tom asked me n:ot to stand here. (把间接引语改为直接引语)
"_____ stand here." Tom _____ to me.