I noticed the puzzled look on his face, I realized that he didn’t understand me.
| A．Although | B．When | C．Unless | D．Until |
The newcomer’s ___________ nature accounts for his making a large circle of friends soon after his arrival.
| A．considerate | B．energetic | C．easygoing | D．aggressive |
---Have you watched the live Oscar Award presentation?
---I ___________it online later because of an important date.
| A．watched | B．had watched | C．was watching | D．have watched |
___________2010 Shanghai World Expo will launch ___________underground network of 700 kilometers of pipes to provide natural hearting and cooling.
| A．The; an | B．The; the | C．不填；the | D．不填；an |
---What beautiful exhibits! Do you mind my taking pictures of them?
--- ______________. Please go ahead.
| A．No way | B．No, better not | C．Never mind | D．Not at all |
—My God! It will take more than two hours to do all the cleaning!
—Oh, _____! We don’t have much time left!
| A．never mind | B．it’s out of the question |
| C．no problem | D．come on |