I'm sorry I keep you ____ (wait)so long.这里是keep doing ,里面可以加人的哦?麻烦细讲一下

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I'm sorry I keep you ____ (wait)so long.这里是keep doing ,里面可以加人的哦?麻烦细讲一下
I'm sorry I keep you ____ (wait)so long.
这里是keep doing ,里面可以加人的哦?麻烦细讲一下

I'm sorry I keep you ____ (wait)so long.这里是keep doing ,里面可以加人的哦?麻烦细讲一下
keep sb. doing
所以waiting

waiting