24.I had just started back for the house to change my clothes ______ I heard voices.A.as B.when

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24.I had just started back for the house to change my clothes ______ I heard voices.A.as B.when

24.I had just started back for the house to change my clothes ______ I heard voices.A.as B.when
24.I had just started back for the house to change my clothes ______ I heard voices.A.as B.when

24.I had just started back for the house to change my clothes ______ I heard voices.A.as B.when
B
...have done sth when sth happened表示”刚好要...的时候某事发生了“.
这句话意思是 我刚好要开始回房子里换衣服的时候就听到声音了 .

B

你好,答案是when
when很经典的用法,正要做什么的时候发生了什么事情的情景用的。
我正要回屋换衣服的时候听到了声音。AS没有这种用法,排除。

when