She was standing by an electric heater and her nightdress _____ fire.
| A．caught | B．set | C．took | D．had |
There is ____ Mr. Smith at the door who wants to speak to you.
| A．a some | B．certain | C．some a | D．a certain |
To make sure that he was at home, I called him up ____ .
A. by chance B. in general C. in particular D in advance
In face of ____ failure, it is the most important to keep up ____ good state of mind.
| A．不填, a | B．a, 不填 | C．the, a | D．不填, the |
_____ from the table, he made a suggestion that we _____some money for those who suffered a great loss in the terrible earthquakes.
| A．Upon rising; raised | B．On raising; raised |
| C．Upon rising; raise | D．On raising; rise |
You never imagine what trouble I have _________this paper in my house.
| A．finding | B．to find | C．found | D．for finding |