2019年mpa考试英语真题——非谓语动词436

{01}Last night when he woke up, he heard someone ________in the next room.
A.sing
B.singing
C.to sing
D.to be singing
解析：
本题选B。
{02}Societies and social relations are ________ in the social sciences．
A.to study the subjects
B.the subject studies
C.the studying subjects
D.the subjects studied
解析：
本题选D。