—Humans can’t live _______ air.
—I agree with you.
| A．without | B．with | C．in | D．for |
He____know the answer, but I’m not sure.
A. maybe B. may be C:may D. must
—_______ can I keep the books? —Two weeks.
| A．How long | B．How often | C．How far | D．How soon |
-My mother is ill in hospital.
——_______.
A.That’s OK B:.All right C.Thank you D. I’m sorry to hear that.
—You look pale. What’s _______ with you?
—I have _______ headache.
| A．the wrong; a | B．wrong; the | C．matter; the | D．the matter; a |