. Gun control is a subject Americans have argued for a long time .
| A．of which | B．with which | C．about which | D．into which |
I'll be home late, but please don't stay ____ for me.
| A．up | B．in | C．over | D．on |
____ the temperature falling so rapidly, we couldn't go on with the experience.
| A．Since | B．With | C．As | D．For |
He was in hospital for six months.He felt as if he was ______ from the outside world.
| A．cut out | B．cut off | C．cut up | D．cut through |
My father ______ my brother for driving but he wanted to pick ______ the knowledge of the computer during his spare time.
| A．advised;up | B．persuaded;out | C．intended;up | D．managed;out |
“How long have you worked on the farm?” “_________ the end of last year.”
| A．In | B．By | C．At | D．Since |