答案:A
Victor apologized for _________ to inform of the change in the plan.
A.his being not able
B.his not being able
C.him not to be able
D.him to be not able
犬吠样咳嗽见于( )
A.急性喉炎B.肺结核C.大叶性肺炎D.急性左心衰E.急性胸膜炎