51. In the real world, there was (were)______ outside the window.

   A. a park with a lovely lake                  B. just a blank wall 

C. many children                                 D. any young lovers

49. A. skate            B. ski                   C. race                D. swim

48. A. cool            B. clod                        C. hot                 D. wet

47. A. buy tickets       B. take turns            C. read newspapers      D. go sightseeing

46. A. walk            B. jump                  C. run                 D. play 

45. A. to feel angry           B. feel happy             C. to feel pleasant       D. felt surprised

44. A. move                    B. think                 C. speak                       D. spend

43. A. alone            B. busily                 C. lonely                D. happily

42. A. hours           B. weeks                C. months               D. years