Unit 6 Colours 习题 2一、单项选择。1. ---_____ colour is this cap? ---It is blue. A. Where B. What C. When D. Who 2. --- What colour is this shirt? --- It brown.A. is B. ist C. are D. be 3. ---What _____ is this T-shirt? ---It is red. A. smell B. colour C. taste D. feel 4. ...