Unit 1 In class 习题一、单项选择 ( ) 1. ----Don’t listen _______Sam, Bobby. ----OK. A. to B. for C. / ( ) 2.----Sorry, I’m late. ----________.A. Thank you. B. Yes, Mr Green. C. Come in,please.( ) 3.----What’s that ? ----It’s ________.A. ball B. a ball C. an ball( ) 4.----Look ...
