___from heart trouble for years,Professor White has to take some _英语解答

___from heart trouble for years,Professor White has to take some medicine with him wherever he goes.
a.Suffered
b.Suffering
c.Having suffered
d.Being suffered
请问这题是考什么知识点的?选哪个?请说明理由.

人气：234 ℃　时间：2019-11-04 08:41:11

解答

选C,Having suffered from heart trouble for years,Professor White has to take some medicine with him wherever he goes.句意是：由于身患心脏病多年,怀特教授无论到哪都必须随身携带着药品.这题考的知识点是非...