－Sir，may I borrow some new books?
－Sorry，you can't________you haven't turn back those you borrowed one month ago.
| A．unless | B．before | C．because | D．until |
10. — How old are you, madam?
— If you _______ know, I’m twice my son’s age.
| A．can | B．must | C．may | D．Should |
9. We forbid _____ in the reading room. That is, you are forbidden _____ in the reading room.
| A．to smoke; to smoke | B．to smoke; from smoking | C．smoking; smoking | D．smoking; to smoke |
8. — I’ve cut my finger and it’s bleeding!
— Put the bandage around it. Don’t move. I will ______ the doctor.
| A．call off | B．call for | C．call in | D．call away |
7. We do not _______ to give out lives for our motherland, let alone suffer some hardships.
| A．hasten | B．hesitate | C．overcome | D．Discourage |
6. It is ______ but not _______ that Auntie will come over to see us on such a snowy day.
| A．likely; possible | B．probably; likely | C．probably; possible | D．possible; probable |