在职研究生英语（二）
阅读短文，选出填入空格最合适的一项： The city introduced a…
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阅读短文，选出填入空格最合适的一项：
The city introduced a charge for cars entering the center during working hours. Drivers now pay a daily fee, and the money is used to improve buses and cycling lanes. ___, traffic in the center has fallen noticeably, and more commuters have switched to public transport. Some shop owners complained at first, but most now say their business has not suffered.
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