_______ go running for half an hour every day? It is good for our health.
| A．What about | B．Why don’t |
| C．Why not to | D．Why don’t you |
The teacher told us a piece of bad news．When we heard of the news，we were all________silence．
| A．for |
| B．in |
| C．with |
| D．by |
—I called you at 6 o’clock yesterday evening，but nobody answered．
—I’m sorry．I________my friends download the movie Kung Fu Panda Ⅱ when the telephone rang．
A．would help
B．helped
C．was helping
—I saw Mr Smith in the office at ten yesterday morning．
—That’s impossible．He________an English party with us then．
| A．has |
| B．had |
| C．was having |
| D．has had |
________I was in the US，I made a lot of American friends．
| A．While |
| B．Although |
| C．Unless |
| D．Until |
—I don’t know________．
—Because he has to look after his mother．
| A．why he is leaving |
| B．why is he leaving |
| C．whether he is leaving |
| D．whether is he leaving |