_____in the sports world，a sportsman needs to train constantly to keep himself in best condition．
| A．Survive | B．Surviving |
| C．To survive | D．Survived |
An old professor was giving a lecture,so our class teacher asked us ______so much noise.
| A．Don't make |
| B．not make |
| C．not making |
| D．not to make |
Paul doesn't have to be made ______. He always works hard.
| A．learn |
| B．to learn |
| C．learned |
| D．learning |
---You were brave enough to raise objection at the meeting.
---Well, now I regret ______ that.
| A．to do |
| B．to be doing |
| C．to have done |
| D．having done |
Being angry,my desk-mate rushed out of the class-room at once, and I rushed out ______.
| A．so well |
| B．as well |
| C．very well |
| D．as well as |
At the sound of the shots,______ ,into the strong wind.
| A．out did the frightened birds fly |
| B．out flew the frightened birds |
| C．out the frightened birds flew |
| D．out the frightened birds did fly |