Shall I ________ some music—You’d better not. I’m ________ on my lessons.

Sir, couldyou please put out your cigarette This is a smoke-free (无烟的) school.—＿＿＿＿＿＿

_____is the woman—- She is _____ English teacher.

35—Did you attend David’s wedding last night?—NoI ________ before that

The headmaster will __________ a speech to the visiting foreign guests this afternoon.