三年级下Unit1-2综合练习一、根据中文提示,填入正确的单词。1. This is a new_(书).2. Dont _ _(听) to Sam.3_ _(进来) and_(关)the door. 4. Dont _(大喊) in the _(图书馆).5. Bob has two _(橡皮).二、单项选择。( ) 1. -Look _ the blackboard , Wang Bing. - Yes , Miss Green.A. at B. on C./( ) 2. -Whats this ? -Its _.A. book B. a book C. an book( ) 3.