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

　　2. Mary had taken _____ to see that her guests had everything that they could possibly want.

　　A. efforts B. pains C. attempts D. endeavors

　　3. He ate what he could, and gave the _____ of the food to the birds.

　　A. remain B. uneaten C. rest D. part

　　4. The government placed _____ on the numbers of foreign cars that could be imported.

　　A. limitations B. restraint C. requirements D. restrictions

　　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. cause

　　参考答案与解析：

　　1. [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. [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. [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)。[ALI]《新英汉辞典》认为也可以用单数。

　　4. [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。)