问题补充：
--- What do you enjoy most in the summer holidays?
--- Playing table tennis.
A. killing time
B. to kill time
C. spending the time
D. to spend the time
答案：
A. killing time
(答案→)B. to kill time
C. spending the time
D. to spend the time
解析：考查非谓语动词。enjoy doing sth.喜欢做某事，不符合题意，答案为B项，为不定式做目的状语，kill time表示“消磨时间”。
