Blinda _______ changing jobs when this chance of promotion occurred, so she took it and stayed on at a much higher salary.
| A．was thinking of | B．thought of |
| C．had been thinking of | D．was to think of |
________ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
| A．While | B．As | C．If | D．Since |
In no case _______ go _______ the law of nature or we’ll meet endless suffering．
| A．we can; by | B．can we; for |
| C．we can; round | D．can we, agains |
— How do you know so much about what’s going on in the countryside?
— I’ve got a friend there who keeps me ________.
| A．informing | B．to be informed |
| C．informed | D．being informed |
If the firefighters ________ in time, the fire would have resulted in many deaths in the hotel.
| A．wouldn’t have arrived | B．hadn’t arrived |
| C．didn’t arrive | D．shouldn’t arrive |
_________ development of nuclear weapons is _________ threat to mankind.
| A．The; a | B．The; the | C．A; a | D．A; the |