一、单项选择题 （共20小题，每小题1分，满分20分）
1. When the building burns, the firemen will arrive at once and the fire.
A. put up B. put down C. put off D. put out
2. It’s important piano well.
A. him to play the B. for him to play the
C. him playing the D. for him playing
3. --- Do you want to borrow this book ? It’s very interesting.
--- No, I needn’t. I it two weeks ago.
A. is reading B. have read C. will read D. read
