sorry ,i can't help you i ( )this eveninga.work b.works c.to work d.am working

问题描述:

sorry ,i can't help you i ( )this evening
a.work b.works c.to work d.am working

选D
从四个选项来看,一定有动词work,这种情况下动词应该和be动词连用
只有D选项中有be动词 am,所以选D