1、A book is not always a good book just _______ it is written by a famous writer.
A. for
B. because
C. since
D. though
2、I don't know the reason ________ he was late.
A. as
B. because
C. why
D. for
3、I could find no __________ with my student' work.
A.blame
B.mistake
C.failure
D.fault
1、 正确答案：B
解析：句意是一本书不一定是好书，只是因为它是被一个有名的作家写的。
as:由于,鉴于.主从并重,从句说明原因,主语说明结果. for:因为,由于.表明附加或推断的理由,引导的分句前常有逗号,for分句不放句首. since:因为,既然.侧重主句,主句表示显然的或已知的理由.
because:因为.表直接原因,回答why的提问;一般放在主句之后,也可单独存在.because of:后面只能跟名词性的词语. by:表示通过某种手段,由于某些特定的原因.
2、 正确答案：C
解析：why在定语从句中表示原因。
3、 正确答案：D
解析：find fault with 意思为“挑剔，找…的岔儿”，那么find no fault with就是无可挑剔的意思了。
4、The earth is bigger than the moon, ____ we all know it.
A. and
B. as
C. which
D. that
5、_______team wins on Saturday will go through to the national championships.
A. No matter what
B. No matter which
C. Whatever
D. Whichever
6、With more forests being destroyed, huge quantities of good earth ________ each year.
A. is washing away
B. is being washed away
C. are washing away
D. are being washed away
4、 正确答案：C
解析：which引导的非限制性定语从句。
5、 正确答案：D
解析：意思是在周六获胜的队都可进入全国锦标赛。这是一个含有主语从句部分的主从复合句，而A，B只能引导让步状语从句。whatever和whichever都能引导主语从句，但前者不受范围限制，而本句表达的是有范围的，因此选D。
6、 正确答案：D
解析：quantities of 可用在可数名词前，意思是“大量的”，表示复数。
