Robert is said ____ abroad, but I don’t know what country he studied in.
| A．to have studied | B．to study | C．to  be studying |
D．to have been studying |
31．The lecture mainly deals with the trouble young children have right from wrong .
| A．distinguishing | B．distinguished |
| C．to distinguish | D．to be distinguished |
30．Written in a hurry .
| A．they find many mistakes in the report |
| B．the report is full of spelling mistakes |
| C．Sam made many mistakes in the report |
| D．There are lots of mistakes in the report |
29．—May I speak to your manager at three o’clock tomorrow afternoon ?
—I’m sorry, He to Shanghai by then
| A．had flown | B．could have flown |
| C．will have flown | D．has flown |
28．The Chinese people are looking forward to the first attempt on the moon after Yang Liavei’s successful trip into space.
| A．landing | B．landed | C．land | D．to land |
27．—Does the new teaching method work ?
— Yes, The students find it easier towhat is being taught.
| A．take in | B．take off | C．take up | D．take on |