— Listen! Helen is singing in the classroom.
—It _______ be Helen. She has gone to Shanghai.
A.mustn’t | B.may not | C.can’t | D.should |
— Listen! Helen is singing in the classroom.
—It _______ be Helen. She has gone to Shanghai.
A.mustn’t | B.may not | C.can’t | D.should |
试题篮
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