从A、B、C和D四个选项中，选出可以填入空白处的最佳选项，并在答题纸上将该选项标号涂黑
1. 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
2. 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
3. When he was opening the door, he was ___________ that he was being followed by a policeman.
A. conscious B. casual C. careful D. doubtful
