按要求完成下列各句
1. They will return in a week.(对画线部分提问)
__________ __________ will they return?
2. "Don't spend too much time on computer games."Mr.Wang said to Tony.(改为同义句)
Mr. Wang __________ Tony __________ spend too much time on computer games.
3. Both Joy and Sam like singing Beijing Opera.(改为否定句)
__________ Joy __________ Sam __________ singing Beijing Opera.
4. Nobody knows the answers.(改为反意疑问句)
Nobody knows the answers, __________ __________?
5. You must hand in your history homework by the weekend.(改为被动语态)
Your history homework __________ __________ __________ __________ by the weekend.