问题
选择题
— What's this? — ________. 
[ ]
A. It's an eraser
B. It's a book
C. It's two books
D. It's a chair
答案
答案：B
搜题请搜索小程序“爱下问搜题”
— What's this? — ________. [ ]
A. It's an eraser
B. It's a book
C. It's two books
D. It's a chair
答案：B