—Where's that report?
—I brought it to you ________ you were in Mr.Black's office yesterday.
| A．if | B．when | C．because | D．before |
Jerry has promised to keep the secret, so he won’t tell anyone _____ asked to.
| A．until | B．now that | C．unless | D．even though |
We can't complain that children are cheating in examinations ______ adults themselves have set such a bad role model for them to follow.
| A．because | B．unless | C．when | D．though |
I felt bad _________ I talked about my unlucky experience to the public.
| A． for the first time | B． the first time | C． in the first time | D．on the first time |
In the global economy, a new drug for cancer, _________ it is discovered, will create many economic possibilities around the world.
| A．whatever | B．whoever | C．wherever | D．whichever |
________ Mr. Smith was the last man I wanted to see, I did all in my power to help him.
| A．Because | B．Now that | C．While | D．As |
We should go to the cinema early. __________, there won’t be any tickets left.
| A．However | B．Otherwise | C．Besides | D．Instead |
The boys enjoy playing basketball __________ many of the girls relax by playing ping-pong.
| A．while | B．or | C．since | D．if |
To be successful, you need to remember that ___________you might be very busy, you need to be energetic and enthusiastic.
| A．as though | B．in case | C．even if | D．now that |
It never will rain roses. __________ we want to have more roses. we must plant trees.
| A．When | B．Unless | C．Until | D．While |
-Did you reach the US the next day?
- No. Somehow . it was three days_______ I arrived there.
| A．since | B．when | C．that | D．before |
The engineers are so busy that they have zero time for outdoor sports activities,___they have the interest.
| A．wherever | B．whenever | C．even if | D．as if |
—People often don't appreciate what they have, do they?
—No, _________ they lose it.
| A．if | B．after | C．until | D．when |
____ the fire broke out, three fire-engines were rushed to the spot.
| A．Hardly | B．Quickly | C．Immediately | D．Gradually |
Scientists say it will be five or six years __________ it is possible to test this medicine on humans.
| A．after | B．before | C．since | D．when |
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