—Can I use your tape recorder for a while?
—Yes, ____________.
| A．go ahead | B．it’s up to you |
| C．that’s all right | D．not at all |
It took me a long time before I was able to fully appreciate what they __ for me.
| A．had done | B．did | C．would do | D．were doing |
Luckily, the man escape death when a fire broke out in his home on Sunday morning.
| A．hardly | B．gently | C．slightly | D．narrowly |
Had I known about this computer program, a huge amount of time and energy .
| A．would have been saved | B．had been saved |
| C．will be saved | D．was saved |
House owners keep their gardens in a neat and orderly state according to the regulations.
| A．may | B．would | C．can | D．shall |
The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat.
| A．being weighed | B．to weigh | C．weighed | D．weighing |