Professor Smith, along with his assistant, ________on the project day and night to meet the deadline.
| A．work | B．working | C．is working | D．are working |
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 |
At the last moment, Tom decided to __________ a new character to make the story seem more likely.
| A．put up | B．put in |
| C．put on | D．put off |
The room is very dark. Please __________ the light.
| A．switch on | B．switch off |
| C．put up | D．put down |