i____ not _____go to work for two weeks 用 be able to来回答

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i____ not _____go to work for two weeks 用 be able to来回答

have, been able to

will not be able to

这个用be able to好像不能填的样子,
应该是填同义词把,
I can not to go to work for two weeks

有时间状语for two weeks 可知用完成时
have been able to
be able to 比can使用时态广 can只用于 现在 过去用could be able to 各种时态