题目内容
Half of the class most of the work. Some of the work really difficult.
A.have done; is B.has done; are C.has done; is D.have done; are
试题答案
1、A
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Half of the class most of the work. Some of the work really difficult.
A.have done; is B.has done; are C.has done; is D.have done; are
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