A．to clean；make

　　B．cleaning；making

　　C．clean；making

　　D．being cleaned；to make

答案C [考查非谓语动词辨析。在本题中can't help是"不能帮助做"，后接(to)do；第二空be busy要接v.­ing形式。因此选C项。另外，can't help只有表示"禁不住......"时，后面才接v.­ing形式。]

11．The traditional approach________with complex problems in our studies is to

break them down into smaller，more easily managed problems.

A．to deal B．having dealt

C．to dealing D．being dealt

答案　C　[句意：在处理学习中存在的复杂问题时，我们所采用的传统方法是把问题分解成更小的、更容易处理的问题。approach常与介词to连用，而to后要用名词或动名词形式，故答案为C项。]

12．________him and then try to copy what he does.

A．Mind B．Glance at

C．Stare at D．Watch

答案　D　[四个选项的英文释义如下：watch：attend carefully to sb or sb's action；stare at：look fixedly with wide open eyes，as in wonder，fear or deep thought；glance at：give a rapid look；mind：take care of or look after。从原句中的try to copy what he does可知应选watch。]

13．-Now that you like the house so much，why not buy it?

-Well，I can't afford ________house.

A．that a big B．a big that

C．a that big D．that big a

答案　D　[that相当于副词so，表示程度，修饰形容词或副词，但如果在"a(n)＋adj.＋n."这个结构中则用that＋adj.＋a(n)＋n.的形式。]

14．You don't need to return the money all at once.You can ________the loan over a

period of 20 years.

A．take back B．pay back