—David，is that man your Chinese teacher?
—It___________ be him．He’s having a meeting．
| A．mustn’t | B．can’t | C．needn’t | D．won’t |
—David，is that man your Chinese teacher?
—It___________ be him．He’s having a meeting．
| A．mustn’t | B．can’t | C．needn’t | D．won’t |
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