---Howaboutmyfood?I

問題詳情：

 ---How about my food? I ____ here for almost half an hour.

 ---I’m sorry, sir. It must be ready by now.

A. have been sitting    B. am sitting    C. had been sitting     D. was sitting

【回答】

A

知識點：現在完成進行時及其被動式

題型：選擇題