【单选题】
Only about one out of twelve of the young men and women of this country ____ college education.
【单选题】
Most people give tips varying between 15 to 20 percent of the cost. Give a 15 percent tip to a waiter. Give him ( ) if he has done a good job.
【单选题】
The cost[填空] by 60%.
【单选题】
For formal English we’d better choose _______.
【单选题】
We will comprehensively promote () education.
【单选题】
For formal English, we’d better NOT choose_______.
【判断题】
Which is big, the moon or the earth ?
【判断题】
“Purchase”and “buy”are not synonyms because “purchase”is more formal than “buy”.
【单选题】
Its high time ( ) bed!
【单选题】
This is a big class, and ______ of the students are girls.