11. Many foreign visitors come to Ha Long Bay because of its natural_______.

A. beauty                    B. beautiful                 C. beautifully              D. wonder

12. You ________ stay up late. It is harmful to your health.

A. must                       B. should                     C. shouldn’t                D. can

13. At Tet, we ________ behave well.

A. must                       B. should                     C. shouldn’t                D. can

14. “Excuse me. Is there a souvenir shop near here?” – “Yes, there’s one ________?

A. go along                 B. straight ahead         C. over there               D. turn right

15.  ________ do you go to school every day?     

A . What                      B. When                      C. How                        D. Where