—There ______ be anybody in the classroom, for the lights are off.
—I’ll go and check.
| A．mustn’t | B．won’t | C．needn’t | D．can’t |
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—There ______ be anybody in the classroom, for the lights are off.
—I’ll go and check.
| A．mustn’t | B．won’t | C．needn’t | D．can’t |
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