____ is believed that Bell invented the first telephone in 1876.
I can do many kinds of housework ___ cooking. I’ll learn it from my mother.
He eats _______ food, so he is _______ fat.
—Would you mind _______?—Not at all.
—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.