【原创】In addition to world hunger, some environmental problems human activities have contributed to ______ soon.
| A．need solving | B．needing solving |
| C．needing to be solved | D．need to solve |
Parents are advised to take pressure ________ a child and give him some encouragement before an exam.
| A．off | B．over | C．from | D．to |
I’m afraid I haven’t got a very good ________ of direction. I always get lost in the city.
| A．sight | B．sense | C．view | D．mind |
Some people would rather ride bikes as bike riding has ________ of the trouble of taking buses.
| A．nothing | B．none | C．some | D．neither |
In America, if ________ friend has invited you to drop by anytime, it is ________ best to call before visiting to make sure it is convenient for him.
| A．a; a | B．the; a | C．a; 不填 | D．the; 不填 |
______ I admit that the problems are difficult, I don’t mean that they cannot be solved.
| A．Unless | B．While |
| C．Since | D．When |