He was ______ medical student before he turned _______ engineer.
| A．a; an | B．the; the | C．a; / | D．/; an |
______, tears came to her eyes.
| A．Reading the letter |
| B．While reading the letter |
| C．As she was reading the letter |
| D．To read the letter |
---Mary, I heard there was an explosion in Luzhou. Could you tell me how it _______?
---Sorry, I don’t know much about it either.
| A．came on |
| B．came about |
| C．came out |
| D．came over |
Can you tell me the way you think of________ the problem?
| A．to work out | B．working out |
| C．work out | D．to work |
----Do you mind if I record your lecture?
----_______. Go ahead.
| A．Never mind |
| B．No way |
| C．Not at all |
| D．No. You’d better not |
I can’t stand _______ with Jane in the same office. She just refuses _______ talking while she works.
| A．working; stopping |
| B．to work; stopping |
| C．working; to stop |
| D．to work; to stop |