问题描述：
—several hotels in this area（）down
—thats because tourism itself has been declining since last year
A.are closing B.close C.had closed D.have been closing
为什么选A不选D?
—thats because tourism itself has been declining since last year
A.are closing B.close C.had closed D.have been closing
为什么选A不选D?
问题解答：
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