—Is that your best friend Simon?
—No, it _______ be him. He flew to Hong Kong yesterday.
| A．mustn’t | B．may not |
| C．can’t | D．needn’t |
—Is that your best friend Simon?
—No, it _______ be him. He flew to Hong Kong yesterday.
| A．mustn’t | B．may not |
| C．can’t | D．needn’t |
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