The new Apple’s product(产品)“iPhone 4S”is________among the young people.
—Must I take the medicine every day?—No, you _______.
—I have a stomachache. What should I do?—You _______ drink sweet water and _______ eat sweet food.
—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.