----- How about the book you are reading now?

   ----- Excellent indeed. You can find many problems we have come across _____ in it.

A. covered         B. covering        C. are referred        D. referred

. You’d better start it right away ______ you forget it.

A. in case of      B. unless                 C. before           D. since

Is the occasion near ______ we can practice our talents?

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

 Can you explain ______ that the medicine has for my illness?

A. about the function to me                 B. me about the function      

C. me the function                              D. to me the function

---Cliff, I lost your bike at school. I suppose I should pay for it.

---Oh, ______. It was an old bike anyway.

A. take it easy        B. OK                          C. don't say so        D. forget it

Not long ago, a person whom I know very well was__________a robbery.

       A．involved in      B．related to      C．included in           D．devoted to

 Only when _________________________.

A. did he arrive the meeting began 

B. he arrived the meeting began.

C. did he arrive did the meeting begin.

D. he arrived did the meeting begin.

In China, shaking hands with each other is a common________ when people meet for the first time.

     A．sense              B．practice             C．scene          D．rule

The big snow caused great ________ to the people living in the south of China, ________ some of them homeless.

       A．destroy; left                               B．damage; leaving     

       C．ruin; having left            D．wound; leaving

While having lunch with a friend recently, we got into a _____ that is pretty frequent in China about morning greeting.

A. conversation           B. conservation            C. reservation        D. criterion