This book___Tom's father's,becausehis name is on the book.A.maybeB.may beC.must beD.must这几个词有什么区别?

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Thisbook___Tom''sfather''s,becausehisnameisonthebook.A.maybeB.maybeC.mustbeD.must这几个词有什么区别?Thisbook___

This book___Tom's father's,becausehis name is on the book.A.maybeB.may beC.must beD.must这几个词有什么区别?
This book___Tom's father's,becausehis name is on the book.
A.maybe
B.may be
C.must be
D.must
这几个词有什么区别?

This book___Tom's father's,becausehis name is on the book.A.maybeB.may beC.must beD.must这几个词有什么区别?
是选C 没有错,但楼上的解释我认为不对
D must后面的确缺少一个be,情态动词后面用动词原形
但是AB这两种都是有的.
A maybe是个副词,一般放在句首做状语,如:Maybe you are right.
BC结构一致,只不过may be(也许是)比must be(一定是)语气要弱,不是很确定.但是从后面的原因状语从句because his name is on the book来看,应该是很肯定的事,所以选C must be而不是B may be
楼上说的might be是语气最弱的(所表示的可能性最小)

选C
A B都不对,没有这说法啊,表示不确定也应该用Might be
D后面少个系动词很明显的