71.He told me the news_____, believe it or not, he had earned $1
A. that B. which C. as D. because
此题容易误选B，误认为这是非限制性定语从句。其实此题应选A，that引导的是一个用以修饰名词the news的同位语从句。不少同学之所以误选B，正是believe it or not（信不信由你）这个插入成分惹的祸。
72.“Each of the students, working hard at his or her lessons,___to go to university.” “So do I.”
A. hope B. hopes C. hoping D. hoped
此题应选B，句子的真正主语是each of the students，横线处填的hopes是句子谓语，其中的working hard at his or her lessons是插入句中修饰主语的非限制性定语。
(1) Each of the students, hoping to pass the exam, _____the book.
A. buying B. having bought C. should buy D. to buy
答案选C，each of the students是句子主语，横线处为句子谓语，hoping to pass the exam是修饰句子主语的非限制性定语。
(2) Many countries, for example,
A. have B. having C. to have D. having had
答案选A，many countries是句子主语，横线处为句子谓语。
73.“I haven't heard from Henry for a long time.” “What do you suppose_____ to him?”A. was happening B. to happen C. has happened D. had happened
此题容易误选B，认为动词suppose后接动词用不定式。正确答案应是C，其中的do you suppose是插入成分。
请看以下类例情形（答案均选D）：
(1) Who do you think _____the money?
A. to steal B. stealing C. to have stolen D. stole
(2) What do you suppose _____ him think so?
A. to make B. making C. to have made D. made
(3) Who do you guess _____ to the station to meet her?
A. to go B. going C. to have gone D. went
(4) What do you imagine _____ him from going?
A. to prevent B. preventing C. to have prevented D. prevented
以下各例中的do you think (believe, guess, etc)也是插入成分，但其后接的句子用陈述句语序：Who do you think he will marry?你认为他会同谁结婚？What do you think we should give her?你认为我们该给她点什么呢？When do you believe he will come?你认为他会什么时候来？What do you guess he wants to buy?你猜他想买什么呢？
74.An awful accident, however, _____occur the other day.
A. does B. did C. has to D. had to
此题正确答案应选B，句末的the other day意为“前几天”，所以句子应用过去时态，而选项D填进去不合题意，故选B。此句有两个难点：一是句中插有however一词，分散了同学们的注意力；二是所填选项B为许多同学所不熟悉的强调用法。
(1) Your mother, however, ____ say that to us that day.
A. does B. did C. is doing D. was doing
(2) Our math teacher, however, _____ speak English well.
A. doing B. does C. is doing D. was doing
以上两题答案均选B，其中的does, did均为强调用法。
75.“Where is it?” “Where is _____? I don't know what do you mean?”
A. what B. that C. where D. so
此题应选A。许多同学认为“疑问词”只能出现在句首位置，对于选A认为不可理解。其实在某些特殊语境中，疑问词出现在句中甚至句末却是完全可能的,但这多半是因为有特殊的语境或使用的句式比较特殊。上面一题选what的原因是：上句问Where is it?(它在什么地),但听话人对此句中代词it指代什么东西并不清楚,所以他反问：Where is what?(什么在什么地方?)其实，这类用法在口语中经常使用。如：
Who said what to whom?谁对谁说了什么？
“Who took it?” “Who took what?”“谁把它拿走了?”“谁把什么拿走了?”
It was so dark I couldn't tell who was who.当时一片漆黑，我分不清哪个是哪个。
“We are ready. Let's begin.” “Ready for what?”“我们准备好了，开始吧。”“准备干什么?” “What are you going to do next fall?” “Next what?”“下一个秋季你打算要干什么?”“你说下一个什么?”
They look exactly the same, and I really don't know which is which.它们看起来一模一样,我实在分不清哪个是哪个。
76.He suggested the person referred _______ put into prison.
A. is B. be C. to be D. should be
答案解析：此题应选C. referred to 过去分词作定语，be put into prison是宾语从句的谓语部分。学生由于粗心，容易误选B或者D。
77.—Must I turn off the gas after cooking ? --Of course . You can never be ___ careful with that.
A．enough B．too C．so D．very
答案解析：选B。can / could not...too是一个固定搭配，表示“无论怎样也不过分；此句话的汉语意思是：－ 做完饭后一定要把煤气关掉吗？－ 当然，你越小心越好。 有些学生误认为can never be too…是一个孤立的结构，而逐字翻译，从而误选D。
78. If you _____ stop smoking , you can only expect to have a bad cough .
A. won't B. would not C. do not D. can not
答案是A项。will除了用作表示将来时的助动词外，还可用来强调愿意或不愿意。又如：
If you will would wait a moment , I will fetch the money .
79.It's nearly seven o'clock . Jack _____ be here at any moment .
A. must B. need C. should D. can
答案是C项。根据语境空白处应填表示具有"随时可能"意义的情态动词。虽然can可以表示可能性，但它往往表示的是对这种可能性的怀疑。例如：Can he still be alive after all these years ? (这么多年之后，他还可能活在人世吗？) should除具有"应该"词义之外，还有一个含义是：will probably (将来很可能发生)又如：His uncle is working among the enemy officials now . Dangerous things should happen to him at any time . (他的叔叔现在在敌人的军营中工作，危险的事随时都可能发生在他身上。)
80.We're leaving at six o'clock , and hope _____ most of the journey by lunch time .
A. to do B. to have done C. to make D. to have made
答案是B项。要答对这道题需要两方面的知识。一是不定式的完成体用来表示这个动作发生在谓语动作之前，或是表示该动作的完成。本题中的不定式的完成体表示的正是该动作的完成，因此这句话可改写为：We're leaving at six o'clock , and hope that we will have done most the journey by lunch time . (我们将在六点时动身，希望在午饭前走完大半路程。)第二，知识是与journey连用的不同的动词所具有的不同的内涵。词组to make a journey或to go on a journey 都表示"做一次旅行"，在这两个词组里a journey是一个整体，但是如果要表示旅程中的一部分，正确的英语则使用do这个动词，例如：do some / much / most of the journey (走完这个旅程的一部分/大部分/绝大部分)