题目内容
-There is a knock at the door. Who ________ be?
-________ be Tommy.
[ ]
A.can it; It must
B.can it: He must
C.must it; He may
D.may it; It can
答案:A

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题目内容
-There is a knock at the door. Who ________ be?
-________ be Tommy.
[ ]