— Mary had an accident on her way to home yesterday．
— ? She is always careful．
| A．How come | B．Why not | C．So what | D．What for |
As he _______ , he was surprised to see that the man had disappeared.
| A．turned against | B．turned in | C．turned around | D．turned up |
Studies show that sunshine, fresh air, and plenty of rest often _______ a person’s recovery from sickness．
| A．arrest | B．accelerate | C．betray | D．condemn |
I, not you , _____ in the wrong. Not I but he _____been invited .
| A．were ; have | B．were ; has |
| C．was; has | D．was ; have |
The population of China is larger than ______ of any other country in the world.
| A．that | B．it | C．one | D．this |
Modern science has given clear evidence ______ smoking can lead to many diseases.
| A．what | B．which | C．that | D．where |