__________ he is old, the old man still insists on studying at a night school.
| A．If | B．Although | C．When | D．Because |
—Are you going to take part in the speech contest?
— __________ It's too good an opportunity to miss.
| A．No problem! |
| B．That's for sure. |
| C．Why me? |
| D．Why bother? |
We have to hurry, __________，we will miss the last train.
| A．eventually |
| B．otherwise |
| C．however |
| D．therefore |
Affected by the earthquake happening in March,2010，seven springs in Peru __________
| A．dried up |
| B．dried out |
| C．dried off |
| D．dried away |
Parents should encourage their children to __________ in all kinds of activities to train their ability of teamwork.
| A．participate |
| B．donate |
| C．devote |
| D．witness |
At last9 nothing but some trees remains，with some branches __________ the wall.
| A．stick out of |
| B．stuck out of |
| C．sticking out of |
| D．to stick out of |