1. Romeo and Juliet _____ Shakespeare’s masterpiece.
    1.   be
    2.   is
    3.   are
    4.   being
    5.   to be
  2. Mark: You _____ not drive without a driving license.
    Ken: Yes, I know.
    1.   must
    2.   may
    3.   ought to
    4.   could
    5.   would
  3. _____ Chon Buri FC played very well in this season?
    1.   Do
    2.   Is
    3.   Was
    4.   Has
    5.   Are
  4. Both rice and upland crops _____ well when not disturbed by insects.
    1.   grow
    2.   grows
    3.   growing
    4.   grown
    5.   to grow
  5. _____ you sure that health care in Thailand is improving?
    1.   Be
    2.   Do
    3.   Can
    4.   Have
    5.   Are
  6. Each group of the students _____ turns in food preparation for the weekly discussion class.
    1.   take
    2.   to take
    3.   taking
    4.   taken
    5.   takes
  7. Paul: How can I get to Queen Sirikit National Convention Center?
    Trin: You _____ take the subway or a taxi.
    1.   had better
    2.   would
    3.   must
    4.   will
    5.   may
  8. _____ scientists observed the rising mean sea level?
    1.   Have
    2.   Did
    3.   Were
    4.   Do
    5.   Are
  9. Mary: Spain _____ surely beat the Netherlands in the football match tonight.
    Liam: I don’t think so. The Dutch team _____ be the champions. We never know.
    1.   should…can
    2.   must…can
    3.   might…should
    4.   can…may
    5.   may…must
  10. 25% of the population in this study _____ in Bangkok.
    1.   to work
    2.   working
    3.   have worked
    4.   works
    5.   work