10. Your math result isn’t good. You _________ to work harder.
A can B. must C. need D. should
11. Mary: “The battery life of a new phone is longer than that of an old one.”
Carol: “_________________”
A. Yes, please. B. You are right. C. What is it? D. No, thanks.
12. Boy: “___________________” – Girl: “That’s a good point”.
A. We must pass all the exams at school. B. We need to fail the exams.
C. We don’t have to obey the school rules. D. We shouldn’t study hard.