Unit 1 In class 习题一．选出下列单词中不同类的一项。( )1. A. come B . close C. window ( ) 2.A. down B. up C. blackboard( ) 3.A.book B. ruler C. please( ) 4.A.robot B. sit C. close( ) 5.A.open B. in C. sit二．选择括号里适当的单词填空。1. Stand _______ ( up down ) , please . 2. Come...
