—Tom enjoys basketball on Sunday afternoons，doesn’t he?
—Yes，he does.But what his sister enjoys .
A. to play；dancing
B. playing；to dance
C. to play；to dance
D. playing；is to dance
网友回答
(答案→)A. to play；dancing
B. playing；to dance
C. to play；to dance
D. playing；is to dance
解析：address所表示的动作发生在谓语动词所表示的动作之前,且与letter之间逻辑上存在着被动关系,having been addressed...在句中作非限制性定语。