Question

—You can't imagine ________ fantastic fun online chatting is.

—Really？But it may cause a lot of trouble sometimes.

A．what B．how C．why D．so

 

Answer 1

A

【解析】imagine后接了一个由what引导的宾语从句，该宾语从句是一个“what＋adj.＋不可数名词＋主＋谓”结构的感叹句，故A正确。