27、Eliza remembers everything exactly as if it ______ yesterday.    

A. was happening   B. happens     C. has happened     D. happened      

26、―Did you see who the driver was?    

―No, so quickly_________ that I couldn’t get a good look at his face.    

A. does the car speed by                                 B. the car sped by    

C. did the car speed by                                   D. the car speeds by    

25、We rushed to the football court, only to see a sign _____ into the ground reading PERIODIC MAINTENANCE （定期维修）.  

A. knocked                               B. knocking                    C. to be knocked           D. being knocked    

24、― I don’t think we have met before.    

― Yes, once at a party, but we _______.    

A. didn’t introduce                                           B. weren’t introduced    

C. haven’t introduced                                       D. weren’t introducing    

23、--- Will you attend Jimmy’s wedding tomorrow?

--- Maybe I will．________ .

      A．It is up to you．                                   B．All right.             

      C．It just depends.                                     D．Glad to hear that.

22、_______ and we will complete the task sent to us.

       A．Another hour                                   B．An hour later        

       C．After an hour                                        D．In an hour

21、So far this year we ______ a fall in house prices by between 5 and 10 percent.

       A．saw                   B．see                   C．had seen           D．have seen

20、In his victory speech, ______ before a huge crowd of his supporters, Obama declared that “ change has come to America.”

      A．having delivered                                  B．to be delivered    

      C．delivering                                           D．delivered

19、Great attention must be paid ______ agriculture, especially in China, ________ population is the largest in the world.

       A．to be developed ; whose                      B．to develop ; which 

       C．to developing ; whose                         D．to developing ; which