What time do you come home ? -- ________ four.A. It’s B. On C. At
He often the mountains. A.climb B.climbingC.climbs
-Is it snowing now? -. A.Yes,it is. B.No, it is. C.Yes,it isn’t.
Is a wind? A.there B.itC.are
Look at the clouds the sky. A.on B.inC.at
-What are you doing? -I’m . A.cook B.cookingC.where