的。"Why not在口语中主要表示同意或赞成，意为"好的，可以呀，为什么不呢"。Not really表示轻微的否定，相当于No或Not very much；Not likely"绝对不会"；Don't bother"别费事儿了。"不合题意。]

7．Professor Smith will come here to give a speech.All the preparations must be________before

5 o'clock.

　　A．in time B．in sight

　　C．in place D．in control

答案　C　[考查介词短语。根据语意可知，应用in place"准备就绪，准备妥当"。in time"及时，来得及"；in sight"看得见"；in control"管理，控制"。]

8．-Could I use your computer for a few moments，please?

-________.I'm not using it myself.

A．Come on B．It depends

C．Go ahead D．That's great

答案　C　[A项意思是"赶快，快点"；B项意思是"视情况而定"；C项意思是"好吧，可以"；D项意思是"太好了"。根据题意选C，表示"可以"，即同意某人做某事。]

9．-Do you think the phone is genuine?

　　-I don't think it________be a fake，as this shop has a very good reputation.

　　A．must B．can

　　C．might D．would

答案　B　[考查情态动词。语意：--你认为这部手机是正品吗？--我认为它不可能是假货，因为这家店有非常好的信誉。根据语意可知，应选择can，I don't think中的否定是否定转移，can用于否定句表示"不可能"。]

10．Fred is second to none in math in our class，but ______，he hardly passed the final

math exam.

A．as a matter of fact B．as usual

C．right away D．believe it or not

答案　D　[句意"在我们班弗雷德的数学首屈一指，但是信不信由你，他几乎没有通过数学期末考试"。A项意为"实际上，事实上"；B项意为"像往常一样"；C项意为"立刻，马上"；D项意为"信不信由你"。]

11．-Can I have a talk with you at about 4 this afternoon，Mr Black?

-All right，I ________from a conference by then.I will be waiting for you.

A．will have come back B．will come back

C．have come back D．will be coming back

答案　A　[根据答语中的"by then"和"I will be waiting for you."可知，此处表示的是到