This is an illness that can result in total blindness ____left untreated. A after B if C since D unless
Peter’s shoes looked just the same as Jack’s, but it cost _____ his.
We are not twins, but we are very much _____. People often mistake one for another.
Don’t do that. It is impolite to play jokes _____ others.
Much to his _____, his father was not angry at the result of the examination.
At the school gate, you should _____ the safeguard with your student card.