—Whose schoolbag is this?—It ___________ be Mary’s. It has her name on it.
Look out!Don’t get too close to the house________roof is under repair.
Do you still remember the chicken farm________we visited three months ago?
—I will go to the countryside to see my grandmother this afternoon,so I can’t go swimming with you.—________.
Sally worked very hard.Finally,she won the first place.
—When did you________?—I’ve________for two months.