39. A. high                   B. low                       C. same                        D. different

38. A. accepted             B. remembered             C. asked                       D. required

37. A. ordered               B. sent                         C. argued                            D. encouraged

36. A. mistake               B. joke                      C. magic                      D. hope

35. A. friend                 B. doctor                      C. son                       D. student

34. A. good                  B. bad                          C. lucky                       D. strange

33. A. thought               B. refused                     C. did                       D. worried

31. ― Will Sam go swimming with us tomorrow?

   ― I think he will go if he ______ free.

   A. be                      B. was                       C. is                   D. will be

30. ― Look! Our bus is coming.

   ― I don’t think we can ______ it. There are so many people.

  A. get off                   B. get on                            C. get up             D. get back