2019年mpa考试英语真题——介词和介词短语1154

{01}Whenever we are in _____ trouble, we should never lose _____ heart.
A.a; the
B.a; a
C./; /
D./; the
解析：
本题选C。

{02}The old man has devoted half his life _____ helping the weak.
A.of
B.to
C.by
D.for
解析：
本题选B。