The computer is very useful in our life, ________? A. isn’t it B. wasn’t it C. doesn’t it
--you like going swimming on weekends? --No, I __
--Do you know how to __ a beef sandwich at home? --Sorry, I don’t know.
--What should I do next? -- the bananas and yogurt into the blender.
Put some and chicken on the sandwich.
Please __ your bill before you pay. A. watch B. check C, see D. look