【last Friday moring I was just about to get on the bus ____

【last Friday moring I was just about to get on the bus ____ I found my wallet left at home.．．
last Friday moring I was just about to get on the bus ____ I found my wallet left at home.
A when B before C while D after
WHY?
why not `C`?
jialilove 1年前 已收到3个回答 举报
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组织上的人1 幼苗

共回答了24个问题采纳率：91.7% 举报

的确是选A,这是考when与while的区别.
1,当从句是延续性动词,两者均可
2,当从句是短暂性动词,只可用when
3,当主从句都是进行时态,只可用while
儿本句中从句是短暂性动词,所以只可用when,:-)

1年前

6

yongshaost 幼苗

共回答了1个问题 举报

c

1年前

2

L番番 幼苗

共回答了9个问题 举报

A?
不太明白
我也感觉选c

1年前

0
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