______ at the man, she was frightened by his facial expression.
| A．To stare | B．Staring | C．Stared | D．Being stared |
To ____ your dream of becoming a scientist, you must work hard from now on.
| A．turn | B．recognize | C．live | D．change |
I ____ go to bed ____ the telephone rang.
| A．was about to, when | B．was going to, while |
| C．would, when | D．was to, while |
You may ask the teacher for help ____ difficulty.
| A．in case of | B．in the case of | C．in any case | D．in no case |
The train ____ at present speed until it reaches Beijing.
| A．is running | B．will be running | C．will have run | D．has run |
Before becoming a pilot, he spent quite a long time ____.
| A．to be trained | B．being trained | C．training | D．to train |