—Who______ it be that is knocking at the door?—It ______ be Father, but I’m not sure.A. can; must B. can; may . must; can D. may; must
—Mr. Smith has returned home from China? —We really miss him! He _______ in our university for 8 years.
The doctor had almost lost hope at one point, but the patient finally _______.
She prefers ______at home rather than _______out for a walk.
— It’s more expensive to live in the city than to live in the countryside. — _________. Living in the city brings people more convenience, though.
—Have you read the timetable ? —Yes . The train ____ at 10:15 p.m.