Smile to the world, ________ the world will smile back to you.
— Why are you so happy, Henry?— My old friend David is coming to visit me. We haven’t seen each other ______ five years.
— Can I help you, boy?— Yes. There is ______ wrong with my bike.
— Mary, is that umbrella ______?— No. It belongs to Jane.
— ______ are you going to Guangzhou?— I’m taking the plane.
—Have you ever heard about the song Big Big World? --Yes, it beautiful. All of us like it very much .A.smells B. sounds C.looks