— Must I feed the goldfish now?
— No, you ______. But you must do it before supper.
| A．needn’t | B．mustn’t | C．don’t | D．can’t |
— Must I feed the goldfish now?
— No, you ______. But you must do it before supper.
| A．needn’t | B．mustn’t | C．don’t | D．can’t |
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