_________ thing for us is studying hard.
—Excuse me. What did you say you would like to do, Miss White?—I said I’d better go back to the office. I ______ somebody this afternoon.
We __________ our breakfast. We __________it at school at 6:30.
The students are clever. They have no problems _____ out the math problem.
—Do the dishes,Tom, or I will tell Mom!--Mind your own_____,Mary!
I think this problem is much more difficult than that one,______?