It is important that the hotel receptionist ___that guests are registered correctly.

Question

A make sure
B has made sure
C made sure
D did we use

Answer 1

A
make之前有个should被省略掉了
类似虚拟语气中should的用法

Answer 2

选A
句型"It is + adj. + that从句..."
此句型在表示建议、命令、要求等意义时，that从句应使用虚拟语气,即从句谓语动词用 "should +动词原形" should 可以省略
常用于这种句型的形容词有：
necessary, important, essential, better, best
故选A.(should)make sure

全句译:
旅馆接待员务必要做到准确地登记每一位顾客，这一点很重要.(命令,要求之意)
补充:"It"在句中作形式主语指代后面的"that"从句本回答被提问者采纳