--Where is finish the work today,Mom? --She____bebroom ,but I am not sure.

问题描述:

--Where is finish the work today,Mom? --She____bebroom ,but I am not sure.
A must beBcan't beCmaybe Dmaybe

D能不能麻烦你解释一下C和D有什么区别maybe是副词may be 是情态动词 + 动词在这里 只能是 may be, 因为副词不能作谓语