2019年mpa考试英语真题——动词的时态213

{01}The number of foreign students attending Chinese universities ________ rising steadily since 1990.
A.is  
B.are
C.has been  
D.have been
解析：
本题选C。

{02}We couldn"t catch up with the others because they ____ too long before us.
A.started
B.were starting
C.have started
D.had started
解析：
本题选D。

{02}The news came as no surprise to me. I _____ for some time that the factory was going to shut down.
A.had known
B.knew
C.have known
D.know
解析：
本题选A。