21 Changjiang River is ___ river in China
A. long B. longer C. longest D. the longest
[答案] D.
22I'll work ___ I can.
A. so hardly as B. so hard as C. as hardly as D. as hard as
[答案] D.
[析] hard可用作形容词和副词，如：The desk was made of hard wood 又如：It is raining hard。 而 hardly 是副词，其词义是"几乎不"，如：Hardly did I sleep last night. 我昨晚几乎没有睡觉。而且hardly用于句首时要采用倒装语序。as…as即可以用于肯定句，也可以用于否定句，但so…as则只能用于否定句中。
23 It is very ___ to listen to him.
A. interested B. interesting C. interested in D. interest
[答案] B.
[析] interest作为名词有两个词义，①兴趣，②银行中所讲的利息。而其形容词 interesting是"使人感兴趣的"，而interested是"感兴趣的"如：He is interested in English.
24Things are ___ worse than I thought.
A. more B. few C. very D. much外语学习网
[答案] D.
[析] 只有much可以修饰比较级。
25It is one o'clock, but her father hasn't come back ___ .
A. already B. still C. too D. yet
[答案] D.
[析] 完成时的否定句尾要用yet， 而already则用于肯定句。