Ex1:Choose the best word or phrase (A, B or C ) to complete each sentence below 
11. Before we went camping, we _______ a lot of things.      A. prepare    B. preparing    C. had prepared
12. After we had moved to the public shelter, the earthquake______.A. occurred    B. happen     C. occurring
13. Eating too much sugar can ________ to health problems.          A.cause             B.lead               C.make
14. A: - All the people were taken to a safer place just in time. B - __________!
          A. That’s shocking         B. Oh dear                    C. That’s great
15 . The team's success was largely __________ to her efforts.          A.because         B.due             C.since
16. Much of the town was rebuilt after the massive _______ of the tornado.  A. peace  B. humor    C. destruction
17. A kilt is the traditional garment for _________.  A. Scottish men  B. Canadian men   C. American men
18. New Zealand is famous for the _______ beauty of its mountain and forests.A. scenery    B. scene    C. scenic
19. Don’t drink that water. It’s ___________.           A. damaged    B. contaminated    C. dead
20. John: “I’ve won the first prize!” – Hoa: “___________”
A. Good luck!            B. Not at all.            C. Congratulations!