1．It is said that dogs will keep you company for as long as you want when you are feeling lonely.
2．Twentyfive years later the traveler returned to the same place.What he saw amazed him. He could not believe his own eyes.
3．When you look at what great effects the climate has on our life, you will agree that it is the most serious problem.
4．What parents say and do usually has a lifelong effect on their children.
