选什么!为什么!___useful information Mr.Smith gave us just now!A.How a B.How C.What a D.What

选什么!为什么!___useful information Mr.Smith gave us just now!A.How a B.How C.What a D.What
选什么!为什么!___useful information Mr.Smith gave us just now!A.How a B.How C.What a D.What

选什么!为什么!___useful information Mr.Smith gave us just now!A.How a B.How C.What a D.What
D
首先information 不可数排除A C 其次如果用how的化,这句话应该改成 How useful information Mr.Smith gave us just now is!