-- I'd like to invite you to a concert this evening.

-- Thank you, but I'm not sure at the moment ________ I'll be free.


  1. A.
    when
  2. B.
    while
  3. C.
    weather
  4. D.
    whether
D
whether引導的從句作be sure的賓語。
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  1. 1.
    1. A.
      woods
    2. B.
      rooms
    3. C.
      holes
    4. D.
      roads
  2. 2.
    1. A.
      dirty
    2. B.
      hard
    3. C.
      light
    4. D.
      easy
  3. 3.
    1. A.
      settle
    2. B.
      let
    3. C.
      have
    4. D.
      keep
  4. 4.
    1. A.
      sweater
    2. B.
      basket
    3. C.
      hand
    4. D.
      eye
  5. 5.
    1. A.
      joined
    2. B.
      lived
    3. C.
      disappeared
    4. D.
      discovered
  6. 6.
    1. A.
      held
    2. B.
      jumped
    3. C.
      stood
    4. D.
      found
  7. 7.
    1. A.
      secret
    2. B.
      strange
    3. C.
      anxious
    4. D.
      patient
  8. 8.
    1. A.
      filled
    2. B.
      covered
    3. C.
      rebuilt
    4. D.
      decorated
  9. 9.
    1. A.
      time
    2. B.
      choice
    3. C.
      achievement
    4. D.
      chance
  10. 10.
    1. A.
      afraid
    2. B.
      ashamed
    3. C.
      proud
    4. D.
      careful
  11. 11.
    1. A.
      Otherwise
    2. B.
      However
    3. C.
      Therefore
    4. D.
      Besides
  12. 12.
    1. A.
      followed
    2. B.
      driven
    3. C.
      protected
    4. D.
      caught
  13. 13.
    1. A.
      annoyed
    2. B.
      satisfied
    3. C.
      delighted
    4. D.
      surprised
  14. 14.
    1. A.
      off
    2. B.
      beside
    3. C.
      around
    4. D.
      over
  15. 15.
    1. A.
      cost
    2. B.
      supply
    3. C.
      support
    4. D.
      preparation
  16. 16.
    1. A.
      escape
    2. B.
      spend
    3. C.
      flee
    4. D.
      survive
  17. 17.
    1. A.
      place
    2. B.
      notice
    3. C.
      charge
    4. D.
      advantage
  18. 18.
    1. A.
      unconfident
    2. B.
      guilty
    3. C.
      embarrassed
    4. D.
      nervous
  19. 19.
    1. A.
      leave
    2. B.
      open
    3. C.
      cross
    4. D.
      occupy
  20. 20.
    1. A.
      inspiration
    2. B.
      expectation
    3. C.
      satisfaction
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