The traffic problem we are looking forward to seeing _____ should have attracted the local government’s attention.
| A．solving | B．solve | C．to solve | D．solved |
Great attention must be paid ________ education，especially in the countryside．
| A．develop | B．to develop | C．to developing | D．developing |
—Was it in April, 1970 that China ________ sending its first satellite into space?
—Yes, that's right.
| A．succeeded in | B．managed to | C．attempted in | D．tried to |
As you know，it is my duty to________my younger sisters from being hurt when they are in danger.
| A．prevent | B．save | C．stop | D．protect |
If no measures are taken, the special wild plant will ________ some day.
| A．die out | B．die away | C．die down | D．die off |
Sir, you ________ take this seat. It’s just for the old.
| A．won’t | B．can’t | C． oughtn’t to | D．needn’t |