They were playing in the garden they heard a scream .A. while B. as C. untilD. when

发布时间：2020-08-16 10:13:52

They were playing in the garden      they heard a scream .
A. while
B. as
C. until
D. when

网友回答

A. while
B. as
C. until
(答案→)D. when
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