问题
选择题
By the end of 1989 many buildings _____ built in the city.[ ]
A. will
B. have been
C. had been
D. have
答案
答案：C
搜题请搜索小程序“爱下问搜题”
By the end of 1989 many buildings _____ built in the city.[ ]
A. will
B. have been
C. had been
D. have
答案：C