题目内容：

句型转换

1.I had sold the ticket when she came.(改为否定句)

I ________  ________  the ticket when she came.

2.She had sung a song to us before she danced.(对画线部分提问)

________  ________  she ________ to us when she danced?

3.They began to climb the mountain after they had bought all the food and drinks. (对画线部分提问)

________  ________  they ________ to climb the mountain?

4.I had been very hungry by 10:00 a.m.(改为一般疑问句)

________ you ________ very hungry by 10:00 a.m.?

5.By the time he got to the airport, the plane had taken off.(同义转换)

________ he ________ the airport, the plane had taken off.