A smile costs_______, but gives much.
Jim is always so busyhe has little time for his family.
I asked two students the way to the post office, butof them knew.
—It’s so hot today. What about going swimming? —!
— Are you willing to live on Mars one day? — It sounds exciting,but it still worries me.
The shop owner suddenly stopped talking with his mouth like a big “O”. It was the President!