I met a few friends of mine, one of ____ is a singer.
| A．him | B．them | C．who | D．whom |
With temperature ______ so rapidly, we could not go with the experiment．
| A．fall | B．falling | C．fallen | D．to fall |
Sydney is _____ most beautiful coastal city and I’m sure I’ll come to it _____ second time.
| A．a ; the | B．the ; a |
| C．the; the | D．a ;a |
— Oh, my God，I left my portable computer in the taxi!
— ______. Let’s call the taxi company first．
| A．Pray for it | B．Cheer up |
| C．Forget it | D．Calm down |
Supporters of underground development say that building down ______ building up is a good way to use the earth’s space.
| A．as well as | B．other than |
| C．rather than | D．more than |
---______ he managed to solve the problem?
---Oh，he turned to Professor Lee for advice.
| A．Was it how that | B．Was it that how |
| C．How was it that | D．How it was that |