— What did she want to know, Tom?   

— She wondered ____ we could complete the experiment

A. when was it B. it was when that C. it was when D. when it was that

—Why do you look worried?

—Fred left the company half an hour ago. His work ________ unfinished since.

A. left       B. was left  C. has left   D. has been left

—Do you need any help, Lucy?

—Yes, The job is ________ I could do myself.

A. less than      B. more than   C. no more than       D. not more than

It rained nonstop for ten days , completely       our holiday.

   A. to ruin                   B. ruined                  C. having ruined       D. ruining

_____ of danger in the street at night, she had to go home, with a friend ____ her.

   A. Warning, following     B. Having warned, following

   C. Having been warned, following      D. Warned, followed

_______ the general state of his health, it may take him a while to recover from the operation.

A. Given            B. To give          C. Giving                  D. Having given

The purpose of new technologies is to make life easier, _______ it more difficult.

A. not make               B. not to make                   C. not making          D. do not make

—Hi, this way, please.

—OK.I sometimes have no sense of ______ when I arrive at the crossroad.

A. position        B. direction   C. situation      D. condition

Smoking, _______ is a bad habit, is, however, popular.

A. that      B. which     C. it    D. though

The letter is from my sister, ______is working in Beijing.

A. which    B. that     C. whom   D. who