問題詳情：
—I think Guilin is a beautiful city.
—I agree with you. You can see boats go ______ he river and cars run ______ the city at the same time.
A. along; along B. along; through C. through; along D. through; through
【回答】
B
知識點：介詞和介詞短語
題型：選擇題
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