题目
A.which
B.where
C.whether
D.when
第1题
A.already
B.quite
C.still
第2题
I'm not sure whether we can gain any profit from the (invest) ______.
第3题
A.if
B.whether
C.how
D.what
第4题
A.for
B.on
C.in
D.about
第5题
I have not found my book yet. I'm not sure ____ I could have done with it.
A) whether B) what C) why D) where
第6题
A: are you sure that you have met him before? B:____I’m mistaken.
A、Unless
B、Whether
C、If DThough
第7题
e investment, so I can’t make a(n) ______ promise to help you.
A) exact B) defined
C) definite D) sure
第8题
A.Thank you.
B.No,I don't think so at all.
C.Do you really think so? I was not sure whether it suits m
D.It's very kind of you to say so.
第9题
I am not sure whether we can give the right advice () emergency.
A.on account of
B.in case of
C.at the risk of
D.in spite of
第10题
A.whether
B.what
C.when
D.how
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