问题
选择题
The building___________last year is our lab. [ ]
A. building
B. to build
C. being built
D. built
答案
答案：D
搜题请搜索小程序“爱下问搜题”
The building___________last year is our lab. [ ]
A. building
B. to build
C. being built
D. built
答案：D