unit 5 what colour is it?lesson 28white its white.black what colour is it?its black.blackits a black pen.a black pen, a black pen.black , blackhi, lisa. lets draw a panda.great!colour it black and white.ok! makemakehomework1、背诵第28课。2、完成练习册第28课。3、把所学的单词,字...