—Look!Peter is playing basketball on the playground．
—It________be Peter．He has gone to Beijing．
| A．can’t |
| B．mustn’t |
| C．might |
| D．may |
—Look!Peter is playing basketball on the playground．
—It________be Peter．He has gone to Beijing．
| A．can’t |
| B．mustn’t |
| C．might |
| D．may |
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