54．A．never                         B．usually                C．sometimes              D．often

53．A．important            B．interesting            C．expensive                D．wonderful

52．A．words                  B．actions                 C．play                       D．fun

51．A．of                       B．for                      C．with                             D．about

50．A．us                       B．him                     C．them                      D．you

49．A．next to                B．around                 C．behind                   D．away from

48．A．surprised             B．tired                    C．nervous                  D．lonely