某高中生的下列行为中，属于参与政治生活的有
| A．在互联网上参与交通管理问题讨论 |
| B．为班级患病同学捐款 |
| C．竞选班长 |
| D．参加文艺演出 |
A man does not know the difficulty of anything_________ he does it personally.
| A．although | B．if | C．because | D．unless |
There is a _________ of 1000 dollars for the return
| A．reward | B．prize | C．thank | D．prsise |
Isn't it very kind __________ your parents to do that for us?
A. for B to C. about D. of
I caught the last bus from town, but Harry came home___________ that night.
| A．very late | B．even later | C．the same late | D．the last one |
We will take________ wants to go there for a sight - seeing.
| A．whoever | B．who | C．anybody | D．all that |