-- Must I return the book by the end of next month?
-- . You can keep it as long as you like.
| A．No, you mustn’t | B．No, you can’t |
| C．Yes, you have to | D．No, you needn’t |
33. Is it the letter you got yesterday ________ makes you so sad?
| A．what | B．that | C．how | D．When |
32. It’s important to listen to your teacher carefully in class, so try not to let your mind _________.
| A．lose | B．stop | C．wander | D．Disturb |
31. －Do you mind if I turn off the TV?
－__________.
| A．Yes, please | B．No, go ahead | C．Yes, you can | D．No, I’d rather you didn’t |
30. Jennifer, who is my best friend, said she would go abroad for further education __________.
| A．before long | B．long before | C．shortly after | D．very fast |
29. A good teacher should leave some time for the students to _________ the knowledge.
| A．introduce | B．receive | C．digest | D．Accept |