题目内容：

完成句子（8分）

1.It took Mike half an hour to work out the problem. (改为同义句)

Mike _______ half an hour ________ out the problem.

2.Tom won’t visit the farm. He’ll stay at home. (合并为一句话)

Tom will stay at home ____ ____ visiting the farm.

3.He keeps silent because he is sad. ( 对划线部分提问 )

____ ____ he keep silent?

4. With the help of Jane ,Kate passed the English exam. (同义句转换)

Kate passed the English exam  ____     ____ Jane’s help.