You’d better_________ his name, address and telephone number in your notebook before you forget them.
The book is of great value ____ can be enjoyed form it until you have a deep understanding of it, however.
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.