--- Let’s go fishing if it _______ this weekend.---- But nobody knows if it ______.
—Do you know who the pen________?—Sorry,I don't know.
It’s too late.I________go home now,or my parents will be anxious.
You’d better read today’s newspaper because there is________in it.
The college students often use up all their money in the first half month.
—Bill,is the pink umbrella Anna’s?—No,it________be hers.Hers is purple.