As is known to us all, _____ tiger is in _____ danger of becoming extinct.
| A．the, a | B．the, 不填 | C．a, 不填 | D．不填, the |
Living in a polluted environment, people may ___ easily.
| A．felt bad |
| B．felt ill |
| C．fall ill |
| D．get on well |
With the ___ of Mr Liu, I made great progress in speaking English.
| A．aid |
| B．assistance |
| C．rescue |
| D．instence |
—Carolina didn’t invite us to her birthday party.
—___? I don’t care.
| A．How come |
| B．So what |
| C．Why not |
| D．What for |
Reforming the education system will be a long and difficult ___. In this course, people should make effort to throw the old one.
| A．program |
| B．process |
| C．project |
| D．procedure |
The manager demanded that all the work ___ ahead of time.
| A．must be finished |
| B．need to be finished |
| C．should finish |
| D．be finished |