题目
A.a rare
B.an additional
C.an unusual
D.an excellent
第4题
They got to Beijing earlier ______.
A) as we did B) as we do C) than we did D) than we were
第5题
We must put _____ into practice.
A、that we have learned
B、what we have learned
C、that have we learned
第6题
We will work ______ we are needed.
A.whenever B.because C.since D.wherever
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