Every hour and every minute precious to us because only six months are left for us to prepare for the college entrance examinations.
A. will be
B. are
C. is
D. were
网友回答
A. will be
B. are
(答案→)C. is
D. were
解析：考查主谓一致。every+ 单数可数名词 and every+ 单数可数名词做主语时，谓语动词用单数形式，根据语境所以选C。