A teacher should always be thoughtful _______ what's best for his pupils.
（A）in
（B）by
（C）of
（D）at
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更多大学英语选择题200道试题
- 1My parents are not interested in modern music.They are _______.
- 2A friendship may be ________, relaxed, situational or deep and lasting.
- 3The football match had to be _________ owing to the bad weather.
- 4I'd like to take __________ of this opportunity to thank all of you for your efforts.
- 5Violence in the local prison has _____________ two lives.
