摘要：38．-Could you please come to the museum with me this afternoon? -Sorry.I ．I have to take a piano lesson at 2 pm． A．couldn’t B．mustn’t C．can’t D．needn’t
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—Could you please come to the museum with me this afternoon?
—Sorry，I ________．I have to take a piano lesson at 2 pm．
| A．couldn’t | B．mustn’t | C．can’t | D．needn’t |
—Could you please come to the museum with me this afternoon?
—Sorry，I ________．I have to take a piano lesson at 2 pm．
A．couldn’t B．mustn’t C．can’t D．needn’t
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—Could you please come to the museum with me this afternoon?
—Sorry，I ________．I have to take a piano lesson at 2 pm．
—Sorry，I ________．I have to take a piano lesson at 2 pm．
| A．couldn’t | B．mustn’t | C．can’t | D．needn’t |