________you have done might do harm to other people.

________you have done might do harm to other people.

A、What
B、That
C、Whether
D、Which
【正确答案】:A
【题目解析】:主要测试主语从句。由句子的语境可知句子________ you have done中动词do需要宾语,而且在下面的句子____might do harm to other people中充当主语,双重作用只能是选择what最佳