Mary will not be relieved ______ David has been taken to the safety.A、ifB、when

游客2025-07-08 4

问题 Mary will not be relieved ______ David has been taken to the safety.

选项 A、if
B、when
C、unless

答案 C

解析 unless引导从句时，主句必须为否定，not…unless…表示“除非…否则就…”。

转载请注明原文地址:https://tihaiku.com/zcyy/4151942.html

相关试题推荐

随机试题

最新回复(0)

Marywillnotberelieved______Davidhasbeentakentothesafety.A、ifB、when