In those days, we had no phones, so we have to keep in touch _________ writing often.
| A．with | B．of | C．on | D．by |
Mr. Smith gradually _____ a knowledge of the subject.
| A．attained | B．achieved | C．required | D．acquired |
The policeman stopped him when he was driving home and _____ him of speeding.
| A．charged | B．accused | C．blamed | D．deprived |
His new appointment takes _____ from the beginning of next month.
| A．place | B．effect | C．post | D．office、 |
On this happy occasion, I'd like to say that we are _____ much obliged to you for your kind cooperation.
| A．even so | B．ever so | C．as yet | D．so far |
The car was completely _____ and the driver seriously injured.
| A．broken off | B．taken off | C．written off | D．picked up |