The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat. （2010浙江卷）

　A. being weighed　　 B. to weigh　　 C. weighed　　　　 D. weighing

（2010·浙江诸暨中学高三第一次月考） 15. I told Sally how to get here, but perhaps I ______ for her. 

       A. had to write it out　　　　B. must have written it out

C. should have written it out　D. ought to write it out

（2010·浙江余姚中学高三第一次质量检测试卷）    21. Professor Li has ___ interest in history, especially in ___ history of Ming Dynasty.

A. an; x 　　 B. an; the 　　     C. x; the 　　　   D. x; an

（2010·浙江诸暨中学高三10月月考）   15. I told Sally how to get here, but perhaps I ______ for her.

A. had to write it out　　　　B. must have written it out

C. should have written it out　D. ought to write it out

Had I known about this computer program, a huge amount of time and energy 　　　.

[2010浙江10]

　 A．would have been saved　　　　　　　 B．had been saved

　 C．will be saved　　　　　　　　　　　 D．was saved