－Why does the river smell terrible?

－Because large quantities of water______．

A. have been polluted                B. is being polluted
C. has been polluted                                 D. have polluted

 There _____ no bus, we had to walk home though it was freezing cold.   

A. was                                          B. was going to be

C. being                                    D. was being

 The cause of the accident ______ the death of 6 passengers ______ the driver’s carelessness.

A. resulted from; led to                        B. resulting from; led to    

C. resulted in; lay in                     D. resulting in; lay in

  -----How long have you been friends ?

-----Well, our friendship _____ childhood.

A. dates back to   B. is dated back to    C. is dated from    D. dated from

 ____ before we depart the day after tomorrow, we should have a wonderful dinner party.

A. Had they arrived                      B. Were they to arrive

C. Would they arrive                     D. Have they arrived

 ______ is it _____ has made Peter _____ he is today?

A. What; that; what                     B. That; that; what

 C. What; what; that                     D. What; that; that

 ___________ made his mother worried.

A. The child was addicted to playing computer games

B. The child’s being addicted to playing computer games

C. The child addicted to playing computer games

D. The child’s being addicted to play computer games

 The professor’s speech didn’t interest me. So rapidly _______ that I could only get the main idea.

   A. spoke he        B. he spoke        C. did he speak      D. he did speak

 Have you ever met with this case in your life ______ you can’t understand others even if they have said several times?

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

 When it comes to whether campus love should be______, there is no agreement among people.

A. applied           B. refreshed         C. sponsored        D. advocated