A completely new idea (deal)（）with air pollution in big cities attracted much public attention.
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How long did Mr. John Smith work in ChicagoFor over（）
简述导游人员分析游客心理和行为的方法和途径，并举例说明。
The program（）to help students prepare for their first year at our college.
A. is designed
B. designed
C. designs
D. has designed
5（）
A. She was making a phone call.
B. She was driving to the airport.
C. She was working in her office.
D. She was having a meeting.
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