---How much did you _____ for the book? ---Twenty yuan. A pay B cost C take D spend
--- Internet business traditional business in the past few years? ---Not really.
---Many teenagers put mobile gaming _________ other things and spend too much time on it. ---That’s really bad.
--- Let’s do something for our dad. --- Good idea. We should always _________ father’s love for us.
---There are a lot of _________ of bike riding. ---I agree. It’s good for the environment and it saves money.
--- A study shows that good habits play a very important _________ in children’s education. ---I think so.