Module 3 Unit 1 What are they doing同步练习一、将图片与相应的单词连线。1. 2. 3. 4. A. boat B. people C. lake D. chess二、读一读,选一选。at in on too behind1. Look ________these boys.2. You are hungry. I’m hungry, ________.3. Look at the children ________the park.4. Look at the people _...