1. The classroom ______a cheerful busy atmosphere to the visitors.
A. introduced B. presented C. awarded D. delivered
2. You can’t imagine what difficulty we had ______ home in the snowstorm.
A. walk B. walked C. to walk D. walking
3. “Oh, thank you for all your help”, he _______as he was leaving.
A. counted B. enlarged C. added D. joined
4. It is ______ his help that we could have finished the task.
A. except for B. instead of C. thanks to D. rather than
5. Although the chairs look alike, they ______ from each other in their constructions.
A. differ B. keep C. learn D. choose