某物被联系起来；be connected to连接；be related to同......相关；concentrate on集中注意力于。"手牵手，手拉手"为hand in hand。故选C项。]

6．-________？

-Sorry.I don't know.

A．What do you think does she like best

B．Do you think what does she like best

C．What do you think she likes best

D．Do you think what she likes best

答案　C　[本题是考查疑问词＋插入语＋陈述语序的句子。句意：--你认为她最喜欢什么？--对不起，我不知道。]

7．-He can't be at home now，for his door is locked.

-He often works with the door________.

A．having locked B．to lock

C．locking D．locked

答案　D　[句意：--他不可能在家，因为他的门是锁着的。--他经常锁着门在家工作。考查with的复合结构，with的宾语是the door，和lock之间存在逻辑上的动宾关系，所以选择过去分词充当宾补。]

8．If we go on using energy so wastefully，________are that our oil wells will be dried up________new energy sources can be found to replace oil.

　　A. chances；before B. difficulties；after

　　C. questions; since D. problems; as

答案 A [第一空考查名词辨析，第二空考查连词辨析。chance作"可能性"讲时，常构成结构"chances are that..."；第二空表示"在......之前"，引申为"没等......"。所以选择A项。]

9．I always cannot help ________people in trouble a hand.But I am so busy today that

I cannot help ________the work with you.

A．to give；to do B．giving；doing

C．give；do D．giving；do

答案　D　[考查非谓语动词。cannot help doing sth禁不住做某事；cannot help(to)do sth不能帮着做某事。]

10．She can't help________the house because she's busy________a cake.