我昨天没看见他。他一定生病了。

I didn't see him yesterday. He must have be ill.

youdao

比尔一定生病了，这是惟一能解释他缺席的原因。

Bill must be ill; it's the only thing that accounts for his being away.

youdao

比尔一定生病了，这是惟一能解释他缺席的原因。

Bill must be ill; it's the only thing that accounts for his being away.

youdao