Li Gang, a police officer said that little about what his son _____ he know the moment all the media reported the traffic accident _____ in Hebei University．
A.did did; happening
B.did do; happened
C.would do; happening
D.could do; happened
网友回答
B解析B，第一个did 是did what，第二个did 是little 用于宾语从句句首引起的倒装，因为know 是实意动词，所以借助于助动词do, 考虑到事态，应该是did,而happening 是做accident 的后置定语，句意是：在所有媒体报道这起发生在河北大学的交通事故时，李刚，这名警官只说了很少关于他儿子做的事。