Listen and choose. (根据你听到的内容,圈出括号中正确的单词。10分)
(1)I have a (red blue) pen.
(2)This is a (yellow black) pencil box.
(3)I have a (white black) crayon.
(4)This is a (orange green) ruler.
(5)I have a (green blue) book.
(6)This is a (black brown) eraser.