某人原有慢性阻塞性肺气肿，呼吸困难、发绀，近日咳嗽加剧，突然发生右侧胸痛，约30分钟后呼吸困难突然加剧，患侧叩诊呈鼓音。该变化是（）。

A.自发性气胸

B.肋间神经痛

C.膈下脓肿

D.腹水

E.肋骨骨折

--How long ___________ each other before they__________ married?

--For about a year.

A．have they known;get

B．did they know; were going to get

C．do they know;are going to get

D．had they known; got