—Listen! Is that Kate playing the piano in the room?—No. It_____be Kate. She has gone to London. [ ]
[ ]
题目简介
—Listen! Is that Kate playing the piano in the room?—No. It_____be Kate. She has gone to London. [ ]
题目详情
—No. It _____ be Kate. She has gone to London.
[ ]
B. needn't
C. mustn't
D. can't
答案