三、单项选择（共10小题，每小题1分，共10分）
( ) 21. It is _____ useful book. It talks about how _____ honest boy makes his living.
|
A. an; an
|
B. an, a
|
C. a, an
|
【考点】不定冠词有a 和an 两种形式，a用于辅音开头的词前，an用于元音(不是元音字母)开头的词前。答案选C.
( ) 22. – ________ you ____________ your homework? – Not yet.
|
A. Did, finish
|
Behave, finished
|
C. Do, finish
|
【考点】现在完成时：考查学生提取关键词能力，该时态常与already, ever, never, before, yet的副词搭配。答案选B.
