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

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we____________thankLucy.A.bothcanBbothmustC.mustbothD.canboth请讲明原因!we____________thankLucy.A.bothcan

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

we ____________thank Lucy.A.both can B both mustC.must both D.can both请讲明原因!
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 have passed the exam.
They both can swim.
They are both students.

选B,both在此用作代词,是we的同位语.