Unit 3 Is this your pencil? 单元测试题
Written test part (共80分)
Ⅳ. 单项选择(每小题1分，共10分)
从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
( )16. I found ______ eraser. ______ eraser is black and white.
A. a; A B. an; An
C. a; The D. an; The
( )17. Look! Mr. Green is ______ the photo.
A. of B. in
C. at D. about
( )18. This is a ______. You can read in it.
A. library B. family
C. box D. bag
