His parents thought he was working very hard in the room, _____in fact, he was chatting with his friends on the Internet.
| A．when | B．where |
| C．which | D．while |
Hurry up﹗The train ______. You know it ______ at 9:00 am.
| A．leaves; leaves | B．leaves; is leaving |
| C．is leaving; leaves | D．is leaving; is leaving |
A man can fail many times, but he isn’t a failure____ he begins to blame someone else.
| A．when | B．if | C．until | D．once |
You_______ so badly now if you had taken the medicine yesterday.
| A．wouldn’t cough | B．didn’t cough |
| C．won’t cough | D．don’t cough |
The government has made it clear _______ 35 international soccer stars will be invited to coach students in soccer.
| A．what | B．when | C．that | D．which |
—Where is he exactly?
—I don’t know, but I saw him _______ an experiment in the lab when I passed by.
| A．to conduct | B．conducted |
| C．conducting | D．conduct |