A.the reason that
B.the reason for why
C.why that
D.why
第2题
Rats are harmful. We must get rid ______them.
A.with
B.of
C.off
D.against
第4题
The May Day Holiday ______ over, we must now get down to work.
A.be
B.being
C.to have been
D.to be
第7题
A.have to
B.has to
C.must
D.need
第8题
We must get to the root of the problem.
A.approach
B.heart
C.cause
D.solution
第10题
We must not get discouraged ______ such a minor setback.
A.because
B.because of
C.owing
D.since
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