---Why not wear your miniskirt, Rose? --- Well, my legs are too thick, if you ______ know.

—Must I finish my homework now?—No, you _______.

—         you speak Chinese, Miss Green?— Yes, I can.

— John, do you have any plans for this weekend?— I’m not sure. I _______ go fishing with my uncle.

 I didn’t know Headmaster Weng was away for Beijing. I       to his office yesterday.