1. You _______ such a long essay; our teacher only asked for 200 words, and you have written 300!

A. mustn’t have written B. couldn’t have written

C. needn’t have written D. might not as well have written

2. _______ for aches, pains and fever, aspirin is now the subject of multiple investigations of its role in treating many more serious complaints.

A. Long used B. Being used long

C. Having been long used D. It has long been used

3. In no country _______ Britain, it has been said, can one experience four seasons in the course of a single day.

A. better than B. more than

C. other than D. rather than

4. We hope the measures to control prices, _______ are taken by the government, will succeed.

A. when B. as C. since D. after

5. “What do you suggest I write about, then, to stand a chance next year?” “It isn’t so much _______ you write as the way you write it.”

A. what…that B. what…which

C. what…how D. which…that

6. Suppose there were a flood or an earthquake and the people could not be reached by trains or trucks. _______ packages of food could be dropped from planes, the people might starve.

A. Until B. Before C. Unless D. If only

7. Mary has long had the desire _______ a famous writer even though the study of writing would require years of sacrifice on her part.

A. for becomingB. to become

C. of becomingD. becoming

8. This is so difficult a problem that the scientist is known to _______ on it for about ten years, but hasn’t found a solution yet.

A.have worked B. have been working

C.be working D. work on

9. A majority _______ collectively may be regarded as a being whose opinions and, most frequently, whose interests are opposed to those of another being, which is styled a minority.

A. taking B. takes C. take D. taken

10. I would have passed the college entrance examinations _______ I missed some of the questions and gave the wrong answers.

A. butB. because C. as D. in that

1. Cneedn’t have done sth.表示做了不必做的事，此句意为：“你真不必写这么长的文章，老师告诉我们只写200个词，可你写了300个词。”

2. AB、C选项之所以错，主要是由于long的位置不对，应为：B. Being long used…;C Having long been used…。句子前半部分是状语，故D也不对。由此可见A是惟一正确的选择。

3. Cother than 的意思相当于except，常用在否定词之后，如nobody other than…，nothing other than等。本句中与no在一起连用，意为“只有在英国……”。it has been said是插入语。

4. Bas是关系代词，引导非限定性定语从句， 其先行词是measures，相当于…as the measures which are taken by the government…，其他几个词都是连词，不能引导定语从句。

5. A句中的第一个空白处需要一个引导名词性从句的关系代词，在从句中做write 的宾语;第二个空白处要填一个修饰way的定语从句的关系代词，因此只能选A。注意: 先行词是way, 引导定语从句的关系代词一定不能用how, 可以用in which, 可以用that, 也可以省略不用。

6. Cunless“除非”，从主从句的逻辑关系上看是惟一正确选择。句意：“假如发生了水灾或地震，且火车、汽车又无法通至灾区，除非用飞机空投，否则那里的人们就会饿死。”

7. Bto become在句中做desire的定语，意为“成为一个著名作家的愿望”，其他结构一般不做desire的定语。

8. B不定式to have been working…做主语scientist的补足语，用完成进行式表示：“这个科学家已对如此复杂的问题研究了大约十年，并且还要继续研究下去。”

9. Dtaken在句中做后置定语，修饰majority, 由于与所修饰的词是动宾关系，所以应用过去分词，a majority which is taken collectively可以理解为“(把)大多数人作为一个整体”。

10. A句中but表示转折，后面陈述的是事实情况：“……看错了问题所以没答对”。暗指“若不是看错了题，就会答对而且通过考试”。因此句子前半部分用的是虚拟语气would have passed。