Question

－Jeffery seems to go without proper food and sleep for days.
－Leave him alone.That's________he reacts to a lost love.

A．what	B．how
C．why	D．when

Answer 1

B

B　考查表语从句连接词。根据句意可知，Jeffery 数日茶饭不思是他失恋的反应。react为不及物动词，“如何反应”应用how表示。