IV．单项选择。 (每小题1分，共15分)

请根据句意和语法，从A、B、C、D中选出最佳答案，并把机读卡上对应题目的答案标号涂黑。

21．They have been watching TV _______ an hour and a half

 A．since                             B．for                             C．in                                   D．at

22．He said that the new car _______ him about 300，000 yuan．

    A．paid                          B．bought                     C．spent                           D．cost

23．Let's take a rest and have a drink．_______?

 A．shall we              B．don't we                  C．will you                        D．do we

24．…Do you like some tea or coffee?

 …_______．I'd like some orange．please．

 A．Either                           B．Neither                    C．Both                             D．None

25．…Where is Tina?

 …Oh．she _______ to the post office．She will be back soon．

 A．went                             B．was                          C．has gone                     D．has been

26．…What should I get my mom for her birthday?

  …_______ buying her a handbag?

 A．How about                  B．Do you think           C．Why don't you D．Why not

27．Mr．Black _______ the book for _______ day．

    A．has bought，whole the        B．has had；the whole

    C．has bought．all                           D．has had，all a

28．…Can we buy this pair of shoes．Mom?

 …Oh．dear．This pair of shoes _______ very nice _______ too expensive．

 A．are；but                     B．is：but                    C．are；and                             D．is；or