Nowadays teachers tend to be more dependent on is thought to be a great teaching aid—the

发布时间：2020-08-16 06:42:48

Nowadays teachers tend to be more dependent on      is thought to be a great teaching aid—the puter.
A. that
B. which
C. what
D. as

网友回答

A. that
B. which
(答案→)C. what
D. as
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