问题
选择题
— The light is still on in his room. Do you know ?
— Maybe he has to study for a test.
A．if he works hard
B．who he is studying with
C．what he is busy with
D．when he will stop working
答案
答案：C
题目分析：句意： --他房间里的灯仍然亮着。你知道他在忙你什么吗？---或许他必须为考试复习呢。此处考查宾语从句，根据答语“或许他必须为考试复习呢”，应该问他在做什么，应用what来提问。故选C。