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TheWuxi-Taipeiairline

練習題1.57W

問題詳情:

TheWuxi-Taipeiairline

The Wuxi-Taipei airline _________ for about five years.

   A. is open B. has opened C. has been opened  D. has been open

【回答】

D

知識點:動詞時態

題型:選擇題