Must I return the book this week? No, you______. You can ______ it for 20 days.
| A．mustn’t, keep | B．needn’t, borrow |
| C．needn’t, keep | D．mustn’t, borrow |
Must I return the book this week? No, you______. You can ______ it for 20 days.
| A．mustn’t, keep | B．needn’t, borrow |
| C．needn’t, keep | D．mustn’t, borrow |
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