In order to get good marks, he has changed his attitude ______ study.
| A．about | B．of | C．to | D．on |
__________ to the left at the crossroads, and you will see the railway station on your right.
| A．Turning | B．If you turn | C．Turn | D．Having turned |
He got up late and hurried to his office, ______ the breakfast untouched.
| A．left | B．to leave | C．leaving | D．having left |
Unfortunately, the research was limited __________ increasing economic profits, _________ protecting the environment.
| A．to; other than | B．by; rather than | C．to; rather than | D．by; more than |
The speech ____________ by Professor Smith was so interesting that the students talked about it all that day.
| A．to be delivered | B．to be given | C．being delivered | D．delivered |
________ theme of the Shanghai Expo was “Better city, better life”． It sent _____ message to people around the world to care about the places where they live．
| A．/…a | B．The…a | C．A…the | D．/…the |