20、I’d never seen Carlo in an evening dress before--- it was quite a(n) ________________.

A．transportation         B．exhibition     

C．repetition              D．transformation

19、Someone is knocking at the door. Go and see _________________.

A．who is he      B．who he is            C．who it is     D．who is it

18、_____ around Zhongshan Park, the tourists were taken to visit the Sand Lake.

A．Showing     B．Having shown C．Being shown         D．Having been shown

17、___ every student aware of the importance of study, they would study efficiently.

A．Were           B．Should         C．May            D．Had

16、It was only when I got to the cinema________________ told the concert had been canceled.

A．where I was   B．where was I     C．that was I       D．that I was

15、Store them in a plastic bag in the fridge, and they will ________ for 2 or 3 weeks.

A．be stayed fresh                                           B．be staying fresh

C．have stayed fresh                                       D．stay fresh

14、What he is addicted___________ her feel better and reduces the pain of separation.

A．to making       B．to makes    C．makes      D．to make

13、_________________________, my wife waits for me to have dinner together.

A．However late I am                             B．However I am late 

C．However am I late                             D．However late am I

12、__________________________, we had to put off the tennis match.

A．It being rainy                                  B．There being raining

C．Having been raining                             D．Being rainy

11、We’re running out _____________ fuel.

A．of        B．for             C．/               D．with