22、Several years had passed           I finally realized the true value of friendship.

A．when         B．that          C．before         D．until

21、Recently some studies have found that learning      second language can lead to       

increase in one’s brain power.

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

20、The boy looked to the right and to the left,           what to do.

A．not to know         B．didn’t know         C．not knowing         D．not being known

19、Hello. You           68442936. I’m sorry I’m unable to answer your call right now.

A．reached         B．have reached         C．are reaching           D．had reached

18、Most of the big hotels were full at this time of year, but finally we           find a room in

one of those small guesthouses near the station.

A．ought to          B．could          C．were able to          D．might

17、Every student as well as teachers who           to visit the museum           asked to

be at the school gate on time.

A．is; is         B．are; are           C．is; are            D．are; is

16、           smoking here will be fined $ 20.

A．Who          B．Whomever            C．Anyone           D．Whoever

15、It was 10 o’clock           the front doorbell rang.

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

14、—I’m terribly sorry that I missed your birthday. I just completely forgot.

—Oh,          .

A．take it easy           B．no problem            C．don’t mention it           D．that’s right

13、My daughter is not sure what to           at the university; she can’t make up her mind

about her future.

A．take up           B．make up            C．pick up          D．build up