Several years after they got married he ____ chatting on the Internet until very late, which eventually resulted in their divorce.
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.