Students ___________ remain in their seats until all the papers have been collected.

You were stupid to try climbing up there. You ______ yourself.

—Excuse me, Mr. Brown. ______ you speak Chinese?—Yes, butt only a little.

No student ______ go out of school for snacks during the break without the teacher’s permission.

Delta, the American airline, is sometimes jokingly explained “Don’t expect your luggage to arrive” because it ______ be very slow.

It was my fault. I ________you about the meeting earlier. 

--- Shall I get one more cake fro you, David?--- Thanks, but you ______. I’ve had enough.

—When I first got to Harvard, my awkward English brought me great trouble.——Oh, dear, it _______a struggle for you to keep up with other students.

—The weather isn't good enough for an outing, is it?—Not in the least. We can't have ______ at this time of the year.

—Do you think the rain will affect the football match?—The players are used to such rainy weather, so it ______ make any difference to them.

Being honest ______ not get you a lot of friends, but it _______ always get you the right ones.

It is usually warm in my hometown in April, but it ________ be rather cold sometimes.

If you ________ smoke in the room, please keep the windows open.

Mike ________at 8:30 for the meeting, but he didn’t turn up.

— Who _____ be phoning us at this time of night? — It might be your sister. 

Oh, I’m not feeling well in the stomach. I ______ so much fried chicken just now.

Oh, I'm not feeling well in the stomach．I ____ so much fried chicken just now．

— Could I have a word with you, mum? — Oh, dear, if you ______.

— I hear it will rain tomorrow.— It _______ true. You see, there are so many black clouds in the sky now.

 Don’t worry. You ________ have that book tomorrow.