You'd better make sure of the time and place.
你最好把时间和地点弄清楚。
But first he must make sure of this man.
可是须得拉紧些。
I'll make sure of the time of the flight.
我要核实一下这班飞机的时间。
I'd like to make sure of the time it leaves.
我想要确认班机时间没有改变。
Try to do everything to make sure of his safety.
要尽力确保他的安全。