—He ____be in the classroom, I think.
—No, he_____ be in the classroom. I saw him go home a minute ago.
| A．can, may not | B．must, may not | C．may, can’t | D．may, mustn’t |
—He ____be in the classroom, I think.
—No, he_____ be in the classroom. I saw him go home a minute ago.
| A．can, may not | B．must, may not | C．may, can’t | D．may, mustn’t |
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