It's a 1 Sunday morning．Some good friends are going 2 a field trip to the Yellow Mountain．They are going to 3 a picnic on the top of the mountain．Every-one takes some food and drink 4 them． 5 two hours later, they are all tired and thirsty．They have to stop 6 a rest and drink．Then they go on 7 ．They have a lot of problems 8 to the top．Linda often goes the 9 way, Hill trips over a stone(石头), Sam has to tie his shoes, Ed can't 10 his heavy bag, Lucy hikes too slowly．But they help each other, and at last they get to the top．They have a nice lunch and a good time．
Mary and Linda are twin sisters．They are my 1 ,and my good friends,too．We live in the same town．so we can 2 each other very often．We know each other quite well．Although Mary and Linda look the same,they are quite 3 in many ways．Mary is a few hours older,but a little 4 ．She is heavier and smarter．How about Linda,then?She is thinner and more outgoing．They both like sports,but Linda is more 5 ．She is better at sports than Mary．They are both very popular in school．
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．
