---Howaboutmyfood?I

问题详情：

 ---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

知识点：现在完成进行时及其被动式

题型：选择题