— 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
C