I regret ________ that you have failed the exam, but what you should do now is not to regret ______ so much time but to seize every moment from now on.
One of the sides of the board should be painted yellow, and .
---You don’t often see them, do you? ---No, I see of them.
He is clever and hard-working, so he has reason to succeed in the exam.
It’s , as I trust you so much.
. One of the students hasn’t prepared lessons very well.