There is no doubt he did is good for us.
A. that what
B. what that
C. that
D. what
网友回答
(答案→)A. that what
B. what that
C. that
D. what
解析：考查句子结构。固定句型：there is no doubt that…该句中that引导的是同位语从句解释doubt的内容；在同位语从句中what he did是主语，what在句中作为dis的宾语。句意:毫无疑问他做的事情对我们是有好处的。故A正确。