-------What is itmade Carl determined to give up smoking?
--------Watching how his father died in pain from lung cancer.
| A．which | B．how | C．who | D．that |
You may use the room as you like, you clean it up afterwards.
| A．as if | B．so long as | C．now that | D．as far as |
The reason _______ he was late was _______ he missed the bus.
| A．why, that | B．why, because | C．that, why | D．because, why |
The tiger, once a ____ animal to humans, is now ____ of disappearing on the earth.
| A．dangerous, danger | B．dangerous, in danger |
| C．in danger, in danger | D．danger, in danger |
We shouldn’t spend our money testing so many people, most of ____ are healthy.
| A．that | B．which | C．what | D．whom |