题目内容：

句型转换

1.They left school at 16. (改为一般疑问句)

________ they ________  school at 16?

2.They sang and danced in the classroom at Christmas. (改为否定句)

They ________ sing ________ dance in the classroom at Christmas.

3.Tang Lei became a member of the Party in 2014. (改为同义句)

Tang Lei  _______ the Party in 2014.

4.He was ill. He didn't go to school. (合并成一句)

He was ill, ________he didn't go to school.

5.He left for New York when he was eighteen.(改为同义句)

He left for New York  ________ ________ ________ ________ eighteen.