Without the happiness Jing brought to the family, my mother _____ for another six years.
Leaves are found on all kinds of trees, but they differ greatly __ size and shape.
He began to take political science_____ only when he left school.
I can't say which wine is best-it's a (n) ___ of personal taste.
---May I ask for a leave,sir? ---sorry,the meeting _____ no absence.
At the beginning of class, the noise of desks _____ could be heard outside the classroom.