He didn’t realize the value of friendship ______ he had lost it.A、ifB、asC、whil

游客2023-09-28  19

问题 He didn’t realize the value of friendship ______ he had lost it.

选项 A、if
B、as
C、while
D、until

答案 D

解析 not...until意为“直到……才”。
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