根据A句完成B句，每空一词：

　　A: The two children haven't caught up with their classmates.

　　B: ________ of the two children ________ caught up with their classmates.

按要求转换句型，每空一词：

　　At the age of five, he began to learn to play the piano.(变为复合句)

　　He began to learn to play the piano ________ ________ ________ ________.

按要求转换句型，每空一词：

　　We must clean the classroom every day.(变被动语态)

　　The classroom must ________ ________　every day.

按要求转换句型，每空一词：

　　Tom asked Mike:“Do you want Potato Chips?”(变为宾语从句)

　　Tom asked Mike ________ he ________ Potato Chips.

按要求转换句型，每空一词：

　　The water was so dirty that we couldn't drink it.(变为简单句)

　　The water was ________ dirty for us ________ drink.

按要求转换句型，每空一词：

　　Titanic is a wonderful film.(变为感叹句)

　　________ ________ ________ film Titanic ________!

按要求转换句型，每空一词：

　　You mustn't play on the road.(变为祈使句)

　　________ ________ on the road.

按要求转换句型，每空一词：

　　He could hardly wait.(变为反意疑问句)

　　He could hardly wait, ________ ________?

按要求转换句型，每空一词：

　　He set the alarm clock for seven.(变为一般疑问句)

　　________ he ________ the alarm clock for seven?

按要求转换句型，每空一词：

　　He has already read today's newspaper.(变为否定句)

　　He ________ read today's newspaper ________.