Wind power is an ancient source of energy ________ we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
—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 |
___ be scolded by the teacher, he had to make up an excuse.
| A．So as to |
| B．In order to |
| C．So as not to |
| D．In order not to |
—How about the performance?
—Wondeful.Well, you know, this performance is being held to raise money for the social ___.
| A．advantage |
| B．welfare |
| C．profits |
| D．benefits |