It was _____ he came back from Africa that year _________ he met the girl he would like to marry.
The cells of humans, especially _____of the brain, can live only minutes without circulating blood.
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.