（届北京市海淀区高三下学期期中练习英语试卷）
The App WeChat provides a networking platform ______ communication is faster and easier.
| A．which | B．where | C．when | D．why |
---You ought to have warned him of the danger!
--- ____! But he wouldn’t listen!
| A．So did I | B．So ought you | C．So I did | D．So I have |
The flood is believed ____ more than 50 people and made thousands homeless, ____ it perhaps the most destroying flood in history in the area.
| A．killing; to make | B．to have killed; making |
| C．to have killed; having made | D．having killed; making |
How can you expect to learn anything ____ you devote all your energies to playing computer games?
| A．in case | B．while | C．when | D．unless |
He ____ down his life for the cause of freedom.
| A．gave | B．took | C．killed | D．laid |
My most famous relative of all, ____ who really left his mark on America, was Rob Sussel, my great-grandfather.
| A．the one | B．one | C．he | D．someone |