2019年mpa考试英语真题——非谓语动词258

{01}________, we were taken to see the library．
A.We had been shown the classrooms
B.Being shown the classrooms
C.Having been shown the classrooms
D.Having shown the classrooms
解析：
本题选C。

{02}As is known to us all, wounds _______ to the air heal more quickly．
A.are exposed
B.is exposed
C.exposed
D.exposing
解析：
本题选C。