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题目内容
（2024年国家开放大学答案）
选择填空：阅读下面的对话或句子，从A、B、C三个选项中选出一个能填入空白处的最佳选项。
Support facilities for electric cars, such as charging stations, have been built or are___-__he process of being built in many cities across the country.
(analysis)
.on
.in
.to
Support facilities for electric cars, such as charging stations, have been built or are___-__he process of being built in many cities across the country.
(analysis)
.on
.in
.to
参考答案
