新教材适用2023_2024学年高中英语Unit1TeenageLifeSectionⅢListeningandTalkingReadingforWriting提能作业新人教版必修第一册

UNIT 1　Section Ⅲ一、语言基础训练Ⅰ.单句语法填空1．They observed the behaviour/behavior (behave) of their new pet.2