请问all后是用is还是are?

All _ present and all _going on well.

请问all后是用is还是are? —— 这要看你想表达什么,可用 is 也可用 are。
All _ present and all _going on well. 这个句子显然是指“在座的所有人”,要用 are:
All _are_ present and all _are_ going on well.
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