Complete the sentens with " more " and " less "

đề bài: complete the sentens with " more " and " less "
1 eating                                     frish make you smater
2 Wash your hand                             care jully. You will have                                 chane of catching flu
3 Children do more sxercis than adulth,so                               they are                                   active
4 People who smile                                        are happer,and live longer