We are sure everything here____ by the time you come back from abroad in a few years.
| A．had changed | B．will have changed |
| C．had been changed | D．will have been changed |
By the time he was twelve, Edison _______ to make a living by himself.
| A．has begun | B．began | C．had begun | D．had been beginning |
The two sportsmen congratulated each other _______ winning the match by shaking hands.
| A．with | B．on | C．in | D．to |
Information has been put forward _______ more middle school graduates will be admitted into universities.
| A．where | B．as | C．when | D．that |
She stepped on my foot _______, not _______, which made me angry.
| A．by chance; on purpose | B．on purpose; by chance |
| C．for purpose; by chance | D．by chance; for purpose |
He had to _______ paying the bills because of a lack of money.
| A．put down | B．put off | C．put out | D．put aside |