said he would never forget those years ________he lived in his hometown with his family, ________ has a great effect on hislife.

Have you________your father to give up smoking?-No,I talked to him many times but he would not accept my advice.[ ]

We all know that paper is made ________ wood. — Yes, we can also say that wood can be made ________ paper.

Sometimes students hardly understand their teachers,________-No, they________. I think they should tryto understsnd their teachers.

. I ____ to the top of the tree, but I fell off it and hurt my leg.