I hate traveling by air________I usually have to wait for hours before the plane takes off．
| A．because |
| B．though |
| C．until |
| D．unless |
—Why didn’t you try your best to get on the subway (地铁)?
—I tried to, but it started moving _______ I could get on it.
| A．before | B．while | C．as soon as | D．after |
I really enjoyed his speech, ________ there were some parts I didn’t quite understand.
| A．because | B．unless | C．though | D．after |
---Excuse me, Mum. When can we have dinner?
---Not until it ___________ in half an hour.
| A．is prepared | B．will be prepared |
| C．has been prepared | D．was prepared |
— Could you tell me ______? I must find him.
— Sorry. I have no idea. But he was here just now.
| A．where Tom was | B．where Tom has gone |
| C．where can I find Tom | D．where Tom has been |
---Did you go to the cinema last Sunday?
---Oh, no. I _____________ go to the cinema. The tickets , you know, are too expensive.
| A．always | B．hardly | C．often | D．sometimes |