I’m sorry that I can’t help _____ trees because I am busy with the homework.
— Can I smoke in this hall?— No, you can’t. If you _____, please go to the smoking room.
— I’m terribly sorry to have put you through so much trouble. — _____. I know you didn’t mean to.
— He seems to be lost in thought. Why?— Because the film _____his memories of his childhood.
Americans _________sent a message to the world________ we have never been a collection of Red States and Blue States: we are, and always will be, the United States of America.
—He should have been warned of the danger. —_____, but he wouldn’t listen to me.