This old computer must have been of great use to did the scientific research.A. thoseB. w

发布时间：2020-08-16 08:41:54


This old puter must have been of great use to      did the scientific research.
A. those
B. when
C. whoever
D. whomever

网友回答

A. those
B. when
(答案→)C. whoever
D. whomever
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