1 . —Look! There stands a man over there behind the tree.I guess it ________ be Mr.Smith.
—It ________ be him.He has gone to his hometown.He left yesterday.
—It ________ be him.He has gone to his hometown.He left yesterday.
A.may, can’t | B.can, mustn’t |
C.must, may not | D.should, shouldn’t |
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