20、―Do you still remember when we went to Nanjing?

―I can’t remember now but          sometime last summer?

       A．might it be                                          B．could it be

       C．could it have been                               D．should it have been

19、Under no circumstances          to the teacher.

       A．is this the first time he has lied              B．this is the first time he has lied

       C．is this the first time has he lied              D．this is the first time he is lying

18、―What do you think of the opening ceremony of 2008 Olympic Games?

―Wonderful. It’s years         I enjoyed myself so much.

       A．a(chǎn)fter                   B．since                   C．before                 D．when

17、Is this the reason       at the meeting for his carelessness in his work?

       A．he explained                                        B．what he explained

       C．how he explained                                 D．why he explained

16、Miss Jones       music at Bardon School for five years when she was abroad and now she is an actress.

       A．had taught           B．has taught            C．taught                 D．has been teaching

15、During the long-term cooperation, Mr. Li       a smart, honest and trustworthy man.

       A．a(chǎn)ppeared             B．made                   C．turned                 D．proved

14、With two children       middle school in the nearby town now, the parents are working hard.

       A．to attend             B．a(chǎn)ttending             C．a(chǎn)ttended              D．having attended

13、His joke went too      . No wonder you got angry.

       A．long                    B．far                      C．a(chǎn)way                  D．soon

12、He can’t be really reading attentively; he is just       pages.

       A．turning off           B．turning around     C．turning over         D．turning up

11、       in the mountains for a week, we were finally saved by the local police.

       A．Having lost          B．Losing                 C．Being lost            D．Lost