Mary and Linda are twin sisters．They are my 16 ,and my good friends,too．We live in the same town,so we can 17 each other very often．We know each other quite well．Although Mary and Linda look the same,they are quite 18 in many ways．Mary is a few hours older,but a little 19 ．She is heavier and smarter．How about Linda,then? She is thinner and more outgoing．They both like sports,but Linda is more 20 ．She is better at sports than Mary．They are both very popular in school．
Everyone wants to have good feelings every day．But how can we 1 happy?
Feeling happy means forgetting．There are quite 2 unhappy things around us．They make us nervous,worried, 3 or jealous(嫉妒的)．what 4 we do then?Just 5 all these unhappy things and keep the happy ones in mind．
Feeling happy means 6 Give a helping hand to 7 in trouble．Give your 8 to an old person on a crowded bus．The more you give others,the 9 you will feel． 10 just learn to give!
Feeling happy 11 means doing． 12 put off(推延)till tomorrow what you can do today．Try your best to make your plan come true, 13 you'll have a feeling of pride and happiness．
14 feeling happy isn't just about playing．Playing makes us lively and lovely,but it makes us 15 dull(愚钝)and bored as well．
