问题
选择题
That's a library. ______ not a science lab.[ ]
A. It
B. It's
C. Its
D. That's
答案
答案：B
搜题请搜索小程序“爱下问搜题”
That's a library. ______ not a science lab.[ ]
A. It
B. It's
C. Its
D. That's
答案：B
