The time and effort he has devoted during the past few years _____ trees in that village are now considered to be very important.
You may use the room as you like,______ you clean it up afterwards.
The country life he was accustomed to________ greatly since 1992.
Had you listened to the doctor, you _______ all right now.
Let your child learn to be independent, for _____ he will leave home to lead his own life as a fully independent adult.
---What course do you want to study at university? ----I love physics._____.