11、Even the best student in our class couldn't answer this question，so it _________ be very difficult．

A．must          B．could              C．may          D．can

10、Not only _________ her how to do it，but offered to help her as well．

A．did he show            B．he shows                  C．did he showed           D．does he show

9、--Did you go to Jack's birthday party?       

--No，I _________．

A．am not invited         B．wasn' t invited              C．haven' t invited          D．didn't invite

8、He should stop _________ that silly earring．

A．to wear         B．wearing           C．to put on        D．putting in

7、Where do you think _________?

A．they live in          B．do they live in        C．they live        D．do they live

6、They asked how _________ to the railway station．

A．do they get           B．getting         C．they to get           D．to get

5、There are _________ visitors _________ to Beijing every day during holidays．

A．thousand of，to come                B．thousands，come

C．thousand，coming                   D．thousands of，coming

4、Taiwan _________ China．It's one of the provinces of China，

A．to be         B．belong to           C．being         D．belongs to

3、He described _________ that day．

A．what he had done                               B．what to do

C．what did happen                                 D．why did they go

2、The house _________ we live is very comfortable．

A．that          B．which          C．in that          D．in which