Scientists are convinced the positive effect of laughter physical and mental health.
— We were talking about the new play ____, remember? — Yes, I enjoyed it very much.
— $1,500, but that's my last offer. — OK. It's a ____.
——Excuse me, ____________? ——That's 110 yuan altogether, sir,
—Sorry, I couldn't find the magazine you asked for.— ____________.
————That was a green dinner. _______ ————Thanks. But it really only took an hour.