More than one student __________ absent. The number of students present __________56.
| A．are; is | B．is; are |
| C．is; is | D．are; are |
He found it increasingly difficult to read, ______ his eyesight was beginning to fail.
| A．though | B．for | C．but | D．so |
31. -----Do you have a minute? I’ve got something to tell you.
-----Ok, ______ you make it short.
| A．now that | B．if only | C．so long as | D．every time |
I’m sorry you’ve been waiting so long, but it’ll still be some time ____ Brian get back.
| A．before | B．since | C．till | D．after |
—Have you got any idea for the summer vacation?
—I don’t mind where we go ______ there’s sun, sea and beach.
| A．as if | B．as long as | C．now that | D．in order that |
The medicine works more effectively you drink some hot water after taking it.
| A．as | B．until | C．although | D．if |