I. Mark the letter A,B,C, or D to idicate the corret answer to each of the following questions.
1. Smoking is associated ______ several diseases including lung cancer and high blood pressure.
    A. to                         B. with                     C. in                                  D.for
2. We need to preserve the _______ of wildife because each species has an important role to play.
    A. diverse                B. diversity            C. diversify                          D. diversely
3. I _____ three books on vocational training to complete this project
    A. read                     B. have read         C. have been reading          D. am reading
4. Tim ______ for the scholarship to study abroad in the USA at least twice 
    A. applied                 B. is applying        C. has been applying          D. has applied 
5. The ancient houses _____ by the fire are now under reconstruction.
     A. destroyed             B. to destroy         C. destroying                     D. are destryed
6. At 24, William pitt was the youngest person____ prime Minister
    A. becoming             B. to become        C. became                          D. was become
7. I think China will be the next country ____ the Olympic Games
   A. who host               B. hosting            C. to host                             D. hosted
8. Tourists  _______ the train from London to Stratford have to change at Coventry.
     A. take                    B. taking             C. to take                               D. who takes
9. The best way _____ London si by taking a guided tour.
    A. seen                    B. to see             C. seeing                              D. to be seen