译下面一段短文，用括号内所给单词的适当形式填空。

In the US，autumn is ___1___（call）“fall”．Fall is a great season for __2___（go）out．The days are ___3___（sun）The air is cool．The trees are colorful．The birds fly south．

In US schools，teachers like ___4___（plan）field trips in the fail．They take students to parks，gardens and forests．They play there．They learn the names of plants，trees and insects．They even bring some back to school __5___（study）．