If you _____________ your study, I am sure you will make greater progress.
______ it will do us harm or good remains ______.
He is the only one of the students who _________ a winner of scholarship for 3 years.
Parents ____ bring up their children under 16 and educate them properly.
All of us found _____ necessary to learn a foreign language.
I used to _____ bed at nine. Now I am used to ____ bed at ten.