Never let your mind wander when driving, ______ a car crash is probable.
| A．but | B．so | C．because | D．or |
The film “World without thieves” ______ a great success and brought in a large profit to the cinema.
| A．appreciated | B．enjoyed | C．won | D．met |
Sometimes the balance in nature is ______ , resulting in a lot of unforeseen effects.
| A．troubled | B．confused | C．disturbed | D．puzzled |
You _____only half the price ,how would the seller sell the book to you ?
| A．spent | B．paid | C．charged | D．offered |
I tried my best to keep calm in face of the students, but the sweat on my forehead _____ me____.
| A．gave; away | B．tuned; down | C．showed; out | D．shut; off |