Mr. Green is said________an experiment to prove their new method of solving the problem when young.
| A．to do |
| B．to have done |
| C．to be doing |
| D．to have been doing |
Despite many advantages of a bicycle, such as being environmentally friendly, it is not without its problems.
| A．obvious | B．physical |
| C．curious | D．original |
“You are to blame for our failure. You can’t making mistakes in this game,” the coach declared.
| A．put up with | B．get away with |
| C．catch up with | D．get along with |
The elevator in the teaching building was always in the summer vacation. That was why I chose to climb the stairs instead.
| A．breaking off | B．breaking up |
| C．breaking out | D．breaking down |
If I hadn’t given up after the heavy defeat, the situation I am in now would be totally different.
| A．selecting | B．surviving |
| C．settling | D．suffering |
The rescuers in Africa say it is worse than ever as disease and starvation to kill thousands.
| A．combine | B．succeed |
| C．gather | D．respond |