Hurry!Theplane

問題詳情：

 Hurry! The plane ______ . You know, it ______at 3: 15

A. takes off, takes off                       B. is taking off, takes off

C. takes off, is taking off                               D. is taking off, is taking off

【回答】

B

知識點：動詞時態與語態

題型：選擇題