—It looks as if it’s going to rain, but I’m not sure whether the windows are shut in my apartment.
—You         as well go back to have a look.

His work _____ have been completed; otherwise, he wouldn’t be enjoying himself on the beach.

My sister advised me that I _____ accept the invitation.

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 is usually warm in my hometown in March, but it ______ be rather cold sometimes.

Thank you for all your hard work last week. I don’t think we ______ it without     you.