He hurried to the booking office only ____that all the tickets had been sold out . [ ]

A. to tell

B. to be told

C. telling

D. told

动脉导管未闭错失手术机会则（）

A.右向左分流

B.器质性肺高压

C.左心室扩大

D.右心室扩大

E.全心扩大