Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.

5.   Doctors and scientists ________ recently the benefit of fish in the diet.

      A. have shown                                                  B. will show

      C. are showing                                                  D. have been showing

6.   If you ________ in my position, what would you do?

      A. are                           B. will be                      C. were                          D. would be

7.   The teacher had to leave early, ________ she?

      A. didn’t                      B. mustn’t                     C. hasn’t                        D. shouldn’t

8.   Alex ________ out because the door is locked outside.

      A. can be                     B. must be                     C. can’t be                     D. mustn’t be

9.   He doesn’t have ________ experience of working in an office.

      A. some                       B. much                        C. an                              D. a

10. The ________ is showing them his plans of the new building.

      A. artist                        B. dancer                      C. engineer                    D. architect

11. Children should be ________ to realize their full potential.

      A. encouraging            B. discouraging             C. encouraged               D. discouraged

12. Of the three of us I seem to have the ________ working experience.

      A. less                          B. least                          C. fewest                       D. little

13. We have decided to ________ money for a local secondary school in the flood-affected area in Quang Tri.

      A. beg                          B. gather                       C. raise                          D. rise

14. By tracking the eye of a hurricane, forecasters can determine the speed ________.

      A. which is a storm moving                              B. at which a moving storm

      C. which is moving a storm                               D. at which a storm is moving