—Severalhotelsinthisareaareclosingdown．—That'sbecauseto...

問題詳情：

— Several hotels in this area are closing down．

— That's because tourism itself ______ since the business downturn began．

     A. is declining                                                B. has been declined

   C. had declined                                             D. has been declining

【回答】

D

知識點：現在完成進行時及其被動式

題型：選擇題