His mother ＿＿＿＿＿ teacher.

A.became     B.has turned     C.came     D.proved

 ＿＿＿＿＿＿ for the free tickets, I would not have gone to the films so often.

A.If it is not     B.Where it not  C.Had it not been     D.If they were not

Do not stand too closely to the fire, or your clothes may catch fire.

He had an expression of resentment（不高兴）, as if Martin＿＿＿a fool of him.

A. had made     B. makes  C. made     D. would make

It’s strange that they＿＿＿＿＿nothing about this matter.

A. know     B. would know     C. knows     D. knew

  I was really anxious about you. You＿＿＿home without a word.

A. mustn’t leave     B. shouldn’t have left

C. couldn’t have left     D. needn’t leave

If you really want to be a “Super Girl”, just have ________ try! 

A. a               B. an              C. the            D. /

This book can be of help to ________ wants to do the job.

A. who    B. whoever     C. no matter who   D. whomever

----How about your trip to Hainan?

----It couldn’t have been _____. Sometimes I went swimming in the sea; sometimes I lay on the sand.

A. so well       B. as bad         C. better          D. worse

Charles Babbage is generally considered______-the first computer.

          A. to invent   B .inventing   C. to have invented   D. having invented