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41.  A. stand             B. sit              C. find              D. support

40.  A. mother’s    B. visitor’s                C. father’s            D. grandparents’

39.  A. carefully    B. fast                   C. slowly      D. patiently

38.  A. still         B. already                C. before       D. not

37.  A. so            B. while            C. but                D. although

36.  A. eager       B. determined            C. worried      D. afraid

14. ― Did you go to the concert yesterday?

― Of course. One of my friends 　　　　 the piano in the performance.

A. is playing     B. was playing   C. has played       D. had played

13. ― She 　　　　 come to her father’s birthday party.

― Yes. But what a pity she missed the last train!

A. should have   B. would like    C. would    D. should

12. The teacher asked the students to calculate how much　　sound travels in water than in air.

A. faster      B. fast    C. the faster    D. the fastest