肺动脉闭锁合并室间隔缺损时（）。

A.全心扩大，左室为著

B.全心扩大，右房为著

C.左室壁增厚

D.肺动脉位于主动脉前方

E.不伴有动脉导管未闭

26.---Did your father come back early last night?

---Yes. It was not yet eight o’clock ______ he arrived home.

A．before

B．when

C．that

D．Until