Social attention should be paid ________our earth from________.
| A．to preventing; being polluted | B．to prevent; polluting |
| C．to prevent; being polluted | D．to preventing; polluted |
－ What does the sign over there say?
－ “No person ____________ bring drinks into the student computer pool.”
| A．will | B．may | C．shall | D．must |
－Was the suspect pronounced guilty?
－Yes, the new evidence ___________ the first witness’ stor。y
| A．confirmed | B．claimed | C．declared | D．observed |
When he was opening the door, he was ___________ that he was being followed by a policeman.
| A．conscious | B．casual | C．careful | D．doubtful |
The teacher has a(an) ___________ to get off topic; sometimes it is difficult for students to make out what he is saying.
| A．concern | B．determination | C．intention | D．tendency |
Can you believe? To raise an adopted dog, a young Australian even stayed single, __________ possible relationships with female students on campus!
| A．turning out | B．turning down | C．turning away | D．turning in |