—You must _____ a letter to your mother tomorrow.—Well, I will, Dad.
English is useful. Let’s try _______ best to learn it well. A. us B. our C. ourselves
We can get _______ touch with David on the Internet. A. in B. on C. to
—May I have _______ bill, please? —Let me see. It’s¥150. A. a B. the C. /
—______ kind girl Nancy is! —Yes, she is always ready to help others.
—Must I park my car behind the building? —No, you _______. You _______ park it there. A. mustn’t; may B. may not; must C. don’t have to; may