You'd better make sure of the time and place.
你最好把時間和地點弄清楚。
But first he must make sure of this man.
可是須得拉緊些。
I'll make sure of the time of the flight.
我要核實一下這班飛機的時間。
I'd like to make sure of the time it leaves.
我想要確認班機時間沒有改變。
Try to do everything to make sure of his safety.
要盡力確保他的安全。