问题：
The young man, who by then _____ admission to university, decided to do some part-time jobs to gain more
practical experience.
[ ]
A. gained
B. was gaining
C. has gained
D. had gained
The young man, who by then _____ admission to university, decided to do some part-time jobs to gain more
practical experience.
B. was gaining
C. has gained
D. had gained
practical experience.
[ ]
A. gainedB. was gaining
C. has gained
D. had gained
参考答案：