Swimming is good _____ our health, but at the same time we mustn’t forget the danger.
---How long have you the dictionary? ---For two years. A. buyB. boughtC. had
----Who helped you with your English? ----______.I learned it all by myself. A. Nobody B.Everybody C. Somebody
Look! There is a pet dog on the playground. Let’s go and play with it. A. liesB. lieC. lying
Trees can also prevent the sand from toward the rich land. A. movingB. to moveC. move
---His sister read the picture-book three times yesterday. ---_______. A. So did I B. so I do C. So I did