2019年mpa考试英语真题——动词的时态98

{01}If a computer crashes, you will lose the file you ________ on unless you save it regularly．
A.are working
B.work
C.worked
D.will work
解析：
本题选A。
{02}I can’t go to the cinema with you because I ________ my ticket．
A.have lost
B.have missed
C.lose
D.is missing
解析：
本题选A。
{03}It is the second time that I ________ in Shanghai．
A.have been
B.had been
C.went
D.am
解析：
本题选A。