问题
选择题
Judging from what has happened here, it’s high time that we _______effective measures to prevent this.
A．could take
B．must take
C．should take
D．would take
答案
答案：C
考查虚拟语气。it’s high time that + did/should + v原形，表示“是该某人做某事的时候了”，故选C。