These teenagers don’t know much of the world yet; that’s why they are so easily
| A．taken in |
| B．taken up |
| C．taken on |
| D．taken off |
With all his efforts, ______ he made such great progress.
| A．no wonder | B．no doubt | C．no problem | D．no hurry |
______ is even more important is that water began to appear on the earth’s surface.
| A．Whether | B．That | C．What | D．Which |
I regret ______ you that you have not been chosen for the performance.
| A．telling | B．to tell | C．having told | D．to be telling |
—Waiter, ______ ?
—Sure. Here’s your bill.
| A．can I have the check, please | B．what do you want to eat |
| C．may I take your order | D．would you like some coffee |
The number of the students ______ this year’s entrance exam is 650,000 less than last year.
| A．took | B．taken | C．to take | D．taking |