该练习是关于初中英语语法复习的时态和语态部分，各种版本教材都可使用。
1.He stepped into the office, _____down and began to fill in the forms.
A. sitting B. to sit C. sat D. having it
2.She said she would telephone but we _____from her so far.
A. haven’t heard B. didn’t hear C. hadn’t heard D. won’t hear
3.When I got to the cinema, the film ____for ten minutes.
A. has begun B. had begun C. had been on D. was
4.I’ll go with you as soon as I ____my homework.
A .will finish B. finish C. am finishing D. finished