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Are they still doing the experiment? They're supposed it by the end of last clas

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Are they still doing the experiment? They're supposed it by the end of last clas

Are they still doing the experiment? They're supposed______it by the end of last class.

A．finishB．finishedC．to finishD．to have finished

试题答案

D

解析

标签：theyexperimentreitsupposed

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