1.We are doing our homework ___ the lights went out.A.as B.while C.when D.as soon as

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1.We are doing our homework ___ the lights went out.
A.as B.while C.when D.as soon as

C,当什么的时候
B之所以不对是因为while后面要用ing形式

.c

c
A肯定不对,BC的区别在于WHILE后面一般跟ING D更加不对了,不可能是我们一做作业灯就灭了 遇鬼呢