You and I could hardly work together, _____?

    A. could you        B. couldn’t I          C. couldn’t we         D. could we  

 Do you consider it any good _____ psychology?

    A. to learn     B. to have learned      C. learning         D. having learned

 Lack of money led the company to a situation _____ they had to decide whether they should keep on with their production.

A. when         B. where                C. that             D. which

 _____ by the advances in technology, many farmers have set up wind farms on their land.

A. Being encouraged                     B. Encouraging

C. Encouraged                           D. Having encouraged

 _____ the police thought he was the most likely one, they could not arrest him since they had no exact proof about it. 

    A. Although         B. As long as           C. If only          D. As soon as 

 The wild flowers looked like a soft orange blanket _____ the desert.

    A. to cover     B. covered          C. cover                D. covering

 My parents have promised to come to see me before I _____ for Africa.   

    A. have left        B. leave            C. left                 D. will leave  

 It was the principles I learned from my reading _____ enabled me to get bigger and better jobs.

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

 How much _____ she looked without her glasses!

A. well         B. good             C. best             D. better

 ---It’s the office! So you _____ know eating is not allowed here.

---Oh, sorry.

    A. may          B. will                 C. must             D. need