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检测·课时达标l 知能达标演练
Ⅰ. 单项填空
1. （2012·杭州高一检测）—The window is dirty.
—I know. It _______ for weeks.
A. hasn’t cleaned B. didn’t clean
C. wasn’t cleaned D. hasn’t been cleaned
2. —Is the sports meeting being held on the playground？
—No. It _______ till tomorrow．
A. was put off B. will put off
C. has been put off D. is put off
3. The recent new business environment _______ the company change its old way of management.
A. was made B. made
C. has been made D. has made
4. Every possible means _______ to save the future of the baseball player so far.
A. was tried B. were tried
C. have been tried D. has been tried
