11.Dave's uncle has many friends.Mr Wilson is a friend of __________ .
A.Dave's uncle B.Dave's uncle's
C.Dave uncle's D.Dave uncle
[解析]B。双重所有格的一种形式“of+名词所有格”，如a friend of John's(约翰的一位朋友）。本题在名词所有格uncle's前面又加了一个名词所有格Dave's，但所有关系并不复杂。
13.That's __________ he didn't come to the party.
A.why B.what C.which D.where
[解析]A。why引导的句子在这里表示原因。全句意为：这就是他没来参加聚会的原因。
15.This is __________ useful book.You'd better buy it.
A.quite a B.quite
C.quite an D.an quite
[解析]A。本题将不定冠词a/an的用法与quite与不定冠词连用的位置关系放在一起考查。quite一般放在定冠词前，如quite a time（很长一段时间）。如果名词前有形容词修饰时，quite在冠词前后均可。如quite a clever boy或a quite clever boy。前一说法更为常见。useful的第一个音素是/ju：/，不是元音，故C错了。
17.—Li Weifeng is one of the best football players in China,I think.
—__________ .
A.All right B.That's right
C.That's all right D.Don't say that
[解析]B。All right.=OK.意为“行”、“好的”；That's right.=Right.意为“对”；That's all right.=You're welcome.意为“不用谢”。
20.__________ you read,__________ you will feel in J.K.Rowling's books.
A.More；more interesting
B.The more；the more interesting
C.More；the more interested
D.The more；the more interested
[解析]D。the more...the more...结构表示“越……越……”，the后都接比较级。如：The more you eat,the fatter you get.你吃得越多，就长得越胖。本题还要弄清interested与interesting的区别：说某人对某事物发生兴趣用interested，说某事物令人感兴趣用interesting。前者的主语是“某人”，后者的主语是“某事物”。试比较：
I am interested in the film.我对那部片很感兴趣。
The film is interesting.那部影片很有趣。
