作业帮I don't know how the accident happened.当I don't know how the accident -- -- --.该用哪些词
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I don't know how the accident happened.当I don't know how the accident -- -- --.该用哪些词
I don't know how the accident happened.当I don't know how the accident -- -- --.该用哪些词
I don't know how the accident happened.当I don't know how the accident -- -- --.该用哪些词
I don't know how the accident
两个空就是:took place/came about /
三个空就是:came into existence
发生 take place…; come about; occurrence; bringabout;
When did the world come into existence
世界是什么时候产生的?
happen是不能用被动的，注意这里的ed是过去式。
所以可以用的词类就是，accident的主动谓语。原句应为 accident happens. accident takes place. accident be seen.之类的。
I don't know how the accident took place.
I don't know how the accident occurred.
I don't know how the accident existed.
occured, took place， came about， came into being 都是发生的意思