The two girls, born four days ____in January 1986, have been friends since their junior days and both won the championship this year.

In my brother's absence, I would like to thank all concerned on his ________.

—Do you know why Lisa cried in class？—I don't know and I don't ________.

________of the land in that district________covered with trees and grass.

He will come to understand your efforts sooner or later. It’s just a ________of time.