Our teachers always tell us to believe in ________ we do and who we are if we want to succeed. （2011四川卷10）
| A．why |
| B．how |
| C．what |
| D．which |
—I need some fresh air, so I'm going out for a walk.
—________.
| A．Have fun |
| B．With pleasure |
| C．You'd better not |
| D．It's none of my business |
The discovery of new evidence led to________.
| A．the thief having caught |
| B．catch the thief |
| C．the thief being caught |
| D．the thief to be caught |
—We need to buy some summer clothes, John.
—Oh, I never know ________when I'm in the store.
| A．what clothes should buy |
| B．what clothes to buy |
| C．what clothes will buy |
| D．to buy what clothes |
—Isn't Miss Brown here yet?
—No.________， she's not here yet.
| A．To my much surprise |
| B．Surprising me |
| C．Much to my surprise |
| D．Surprisedly |
The temperature is high enough ________water into vapor(蒸汽)．
| A．to be changed |
| B．changing |
| C．to change |
| D．changed |