49. A. with               B. or                    C. but                D. and

48. A. Boys                    B. Girls                 C. Men                       D. Women

47. A. in                    B. from                   C. on                      D. like

46. A. days                   B. way                  C. today                    D. time

45. A. The window in our classroom                     B. The window of our classroom

C. Our classroom's window                         D. The windows of our classroom

44. A. very                        B. much                    C. too                               D. there

43. A. We                    B. Us                    C. Our                     D. Ours