15、The whole class           searching for the missing boy when the heavy rain poured down

A．was        B．were            C．had been           D．would be

14、Let' s move all the products into the hall and      them in a proper order．

A．design          B．decorate          C．develop       D．arrange

13、The university with two ____ campuses has a student population of 50,000 in total．

A．unique          B．single    C．separate          D．alterative

12、There are also instructions about the      of all the buttons and switches．

A．purpose          B．function               C．power          D．effect

11、Mr. Smith advised us to      a written agreement even it was just a small deal．

A．hold on         B．insist on         C．believe in    D．rely on

10、-----She missed her train to London, ____ she didn’t seem to care．

---- Well, there is another one in 15 minutes．

A．or           B．as          C．thus          D．yet

9、They said his lack ____ experience could lead to a disaster and he should ask for necessary help．

A．of           B．in           C．for           D．to

8、Before she ______ the door, she____what had happened to her computer．

A．walked; noticed                                         B．walked; had noticed

C．walks; has noticed                                    D．had walked; noticed

7、Well,      ,  he is just my colleague．But I think we can become best friends one day．

A．time and again                                          B．now and then

C．in the mean time                                      D．for the moment

6、I suddenly found my watch didn’t work any more and only then     I was late for school．

A．had I realized                                           B．I had realized

C．did I realize                                             D．realized I