---Where’s that report?
---I brought it to you ________ you were in Mr. Black’s office yesterday.
| A．if | B．when | C．because | D．before |
Fever is a ________of many illnesses. So I suggest you take it seriously and see a doctor as soon as possible.
| A．message | B．symptom |
| C．label | D．clue |
Had I known about this computer program, a huge amount of time and energy .
| A．would have been saved | B．had been saved |
| C．will be saved | D．was saved |
I won the first prize and you can imagine how excited I was when the Mayor ________ me with the reward.
| A．provided | B．supplied |
| C．presented | D．charged |
--The weather has been very hot and dry.
--Yes. If it had rained even a drop, things would be much better now! And my vegetables .
| A．wouldn't die | B．didn't die |
| C．hadn't died | D．wouldn't have died |
You have to be accurate in this job，because a small mistake can make a big ________.
| A．difference | B．difficulty |
| C．trouble | D．change |