The policy of the mainland is very clear and straightforward,and the key problem is _____the leaders of Taiwan will accept it．
| A．that | B．how | C．why | D．whether |
He was fired ____his carelessness and laziness.
| A．because of | B．because | C．thanks to | D．since |
Shortly after the book Uncle Tom's Cabin________, the Civil War of America________.
| A．came about; broke away | B．came out; broke out |
| C．came on; broke up | D．came up; broke down |
—When will the game begin?
—It will begin later than usual _________ 15 minutes．
| A．in | B．on | C．by | D．at |
Some areas, ____ their severe weather conditions, are hardly populated.
| A．due to | B．with regard to | C．but for | D．in spite of |
_________ a lot of troublesome affairs to deal with,our boss doesn't have any time to spend holidays.
| A．Thanks to | B．For | C．With | D．In case |