题目内容：

we ____________thank Lucy.
A.both can B both must
C.must both D.can both
请讲明原因!

优质解答

B首先,这句话的意思是“我俩都得感谢Lucy.”因此就排除了A和D.然后,both 这个词作为代词表示两者时,与谓语的位置关系如下：在实义动词/助动词/情态动词之前,系动词之后.eg.They both went to Shanghai.They both hav...