问题
选择题
— The light is still on in his room. Do you know _________?
— In order to practise for the English singing party.
A．if he works hard
B．who he is studying with
C．why he is so busy
D．when he will stop working
答案
答案：C
题目分析：if是否；who谁；why为什么；when什么时候。根据下文，为了这次英语歌唱晚会做练习。可知上文问的是原因，故选C，他房间的灯还在亮着，你知道他为什么这么忙吗？故选C。