二．选择合适的词填空，使短文的内容完整，每词只能用一次。
( lunch, day, new, trees , river, flower, It's, air , water, to, from, for )
Amy is my ____________ classmate . She's 10 . She often has __________ at school . She's __________ USA. Her favourite __________ is Sunday . Because sometimes Amy and I can go __________ the nature park on Sunday . There are many ______ and a ___________ in it . The ____________ is clean . The ___________ is fresh . We like the nature park . __________ pretty .