— when has the country been open to international trade? —1978，I suppose.
| A．Since | B．In | C．From | D．After |
How long is it ______ we last spent the holiday in the country together?
| A．until | B．before | C．that | D．since |
The head of the company promised to deal with matters of this sort ____ he returned to his office.
| A．the moment | B．while |
| C．by the time | D．until |
They were walking along the shore ______ a huge wave appeared out of nowhere, sweeping
them out to sea.
| A．as | B．while | C．when | D．though |
I 'll wear a red jacket________ you can see me easily.
| A．in case | B．so that | C．now that | D．if only |
-- Are you free now? I have something interesting to tell you.
--- OK, _____ you make it short. You know, I am busy.
| A．now that | B．as soon as | C．every time | D．as long as |
Don’t run red lights, _____ you may get run over by a car.
| A．so | B．but | C．for | D．or |
You’d better not leave the medicine_______ kids can reach it easily.
| A．even if |
| B．which |
| C．where |
| D．so that |
______ I explained on the phone, your request will be considered at the next meeting.
| A．When |
| B．After |
| C．As |
| D．Since |
—I am going to the post office.
—_____ you’re there, can you get me some stamps?
| A．As |
| B．While |
| C．Because |
| D．If |
Sometimes we believe what we see _____ the reality may be different.
| A．now that |
| B．as if |
| C．even though |
| D．as long as |
It’s much easier to make friends ______ you have similar interests.
| A．unless | B．when | C．even though | D．so that |
Making eye contact gives the interviewer the impression that you’re confident _______ you actually feel quite uncomfortable.
| A．in case | B．even though |
| C．only if | D．now that |
Luggage may not be brought into the building ________ a guard has checked it first.
| A．when | B．because | C．after | D．unless |
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