28、Later in this chapter cases will be introduced to readers ___ consumer complaints have resulted in changes in the law.

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

27、_________ and we will complete the task sent to us.

A．Another hour         B．An hour later            C．After an hour          D．In an hour

26、---Goodbye, Joyce. Please remember me to your parents.

---_________.

A．Thanks, I will                                        B．It’s very kind of you to say so    

C．My pleasure                              D．What a good idea

25、You’ll have to pay one month’s rent in _____, plus a _____ of $500．

A．advance; check                          B．reservation; cash 

C．advance; deposit               D．check; deposit

24、They hadn’t been out for long ________ she felt sick in the stomach.

A．as        B．when        C．while        D．though

23、So many students __________ for the traffic jam, the exam had to be postponed.

A．were late           B．been late             C．has been late            D．being late

22、The cloth ______ fine, but _________ well.

A．looks; doesn’t wash                               B．looks; isn’t washed

C．is looked; doesn’t wash                    D．is looked; isn’t wash

21、Understanding the cultural habits of another nation, especially _______ containing as many different subcultures as the United States, is very difficult.

A．one            B．that           C．some           D．the one

20、Words _______ me when I wanted to express my thanks to him for having saved my son from the burning house. 

A．left           B．discouraged           C．disappointed             D．failed

19、The teacher, with 18 girls and 22 boys of her class, ____ doing experiments in the lab when the earthquake struck.

A．was            B．were          C．had been            D．has been