---- Is it high time that we on the school building?
---- Yes, it .
A. do some repairs; is
B. do some repair; is
C. did some repairs; is
D. did some repair; was
网友回答
A. do some repairs; is
B. do some repair; is
(答案→)C. did some repairs; is
D. did some repair; was
解析：在It is high time that…句型中，所跟的that引导的定语从句应该用虚拟语气，谓语动词应该用过去式，所以排除A、B选项。do some repairs和during repairs中常用repair的复数形式，但常说beyond repair, in good/bad repair, out of repair, under repair。