50．A．walk          B．walks               C．walking       D．walked

A

以下是几位同学在网上聊天的记录。

To Nicole

49．A．watch         B．saw                 C．read          D．look

48．A．theme         B．themed              C．themes        D．theming

47．A．attract         B．attracts              C．attraction      D．attractions

46．A．neither        B．too                        C．either         D．also

45．A．other         B．the other             C．others         D．the others

44．A．different       B．difference           C．same          D．differences

43．A．In            B．On                 C．At            D．To

42．A．been          B．be                  C．gone          D．go