题目内容

-Is that your best friend Kitty?
- No, it _________ be her. She flew to Singapore yesterday.
A．mustn’tB．may notC．needn’tD．can’t
D

试题分析：句意：--那是你的最好的朋友Kitty吗？--不是，那不可能是她，她昨天坐飞机去新加坡了。根据She flew to Singapore yesterday可知推测的人很有把握，must用语肯定句；否定句中用can’t。故选D。
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