1. It isn’t so much whether he works hard; the question is whether he works _____.
A. above all B. in all C. at all D. after all
[答案]C. at all.
[注释]at all 全然，真地（常用于肯定句中）：If you do it at all, do it well.(你若真做，就得做好。)not...at all 全不，毫不：He doesn’t seem at all interested in my plane.(他似乎对我的计划毫无兴趣。)above all(=most important of all)最重要的。in all 总计：We were fifteen in all.(我们总计15 人。)after all 毕竟，终究。
本题译文：他是否努力工作到并不重要，问题是他是否真正地做了。

2. Mary had taken _____ to see that her guests had everything that they could possibly want.
A. efforts B. pains C. attempts D. endeavors
[答案]B. pains.
[注释]take pains to do sth.下苦功夫做某事：I’m grateful because you have taken pains to show me how to do the work.

3. He ate what he could, and gave the _____ of the food to the birds.
A. remain B. uneaten C. rest D. part
[答案]C. reset
[注释]the rest (of)剩余部分，其余。remain 作“剩余物”(=what is left)解时常用复数形式，如：the remains of a meal(残羹剩饭)。

4. The government placed _____ on the numbers of foreign cars that could be imported.
A. limitations B. restraint C. requirements D. restrictions
[答案]D. restrictions.
[注释]restriction(可数名称)限制性规定：It is a club with rigid restrictions on its membership.Limitation 局限性，不足之处，不利之处（可数）：1)I know my limitations.(我了解我的不足之处。) 2)Every from of art has its limitations.（每种艺术形式都有其局限性。）

5. We won’t know whether it will be successful. We won’t know whether there will be good _____.
A. ends B. results C. effects D. causes
[答案]B. results.
[注释]result 意为“由某种活动或某种原因所产生的结果”，如：obtain(=get, attain, gain win, secure)good results（取得好结果），publish the results（公布成绩）。