—As a teacher, we can’t be _______ patient with our students.
—May I watch TV, Mom?—I’m afraid you _______.
We don’t know how to prevent the flu. Shall we ask Doctor Wang Hai for______?
—Humans can’t live _______ air.—I agree with you.
—Who taught _______ Japanese?—I learned it by _______.
—You’d better not read _______. It’s bad for your eyes.—You’re right. I won’t do that again.