–________.
–Congratulations!
A. Sorry for breaking the glass. B. How are you feeling today?
C. I was awarded first prize in the writing contest. D. Why not take the underground to the university?
–Would you like to join me in making cakes tomorrow?
–______.
A. It doesn’t matter. B. Don’t worry. C. You’re welcome. D. I’d love to.
Professor Tu Youyou never stops doing research on Chinese medicine, ______?
A. is she B. does she C. isn’t she D. doesn’t she
The two companies decided to work together ______ they had common interest.
A. because B. unless C. but D. or
–______ I park my car here for a while?
–No, you mustn’t. Do you see the sign “NO PARKING”?
A. Would B. May C. Must D. Should
The workers are busy _______ windows to the new building these days.
A. fix B. fixed C. fixing D. to fix
