In almost all the colleges in our country now, college students sometimes earn enough money by ______ of part time job to support themselves.
| A．assist | B．way | C．means | D．aid |
Strong __________ can be very dangerous for swimmers.
| A．flows | B．columns |
| C．floods | D．currents |
Mr Brown is a（n）__________ secretary in our office, for he is able to do tasks successfully, without wasting time and energy.
| A．effective | B．efficient |
| C．flexible | D．sufficient |
It was nearly an hour __________ the sleeping pill __________ effect.
| A．when; took | B．before; took |
| C．since; takes | D．before; would take |
The boy's father insisted that the boy __________ badly and that he __________ to the nearest hospital at once.
| A．be hurt; should be sent | B．be hurt; should send |
| C．was hurt; be sent | D．was hurt; would be sent |
My income is rather changeable, but I earn $73 a day __________.
| A．on the other hand | B．in particular |
| C．on the whole | D．on average |