He warmly congratulated them on they had achieved in science and technology.A. thatB. whe

发布时间：2020-08-16 07:44:22


He warmly congratulated them on      they had achieved in science and technology.
A. that
B. where
C. what
D. which

网友回答

A. that
B. where
(答案→)C. what
D. which
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