. --So hard __________ in the past few months that he has made great progress in English.
--I can see that, only a few mistakes he made in this exam.
| A．he worked | B．did he work |
| C．he has worked | D．has he worked |
The traffic problems we are looking forward to seeing should have attracted the government’s attention.
| A．solving | B．solve | C．to solve | D．solved |
that he was praised by his teachers.
| A．So great progress had he made | B．So great progress he had made |
| C．Such a great progress had he made | D．Such great progress had he made |
—Where does he come from?
—I know nothing about him except that he is a doctor occupation.
| A．in | B．by | C．through | D．for |
The picture was taken a long time ago, but it looks as if it yesterday.
| A．was taken | B．had been taken |
| C．were taken | D．has been taken |
that the government can lead them out of the finacial crisis, people are optimistic about the future of the country.
| A．Convincing | B．Convinced | C．To convince | D．Having convinced |