完型填空(共20小题;每小题1分, 满分20分) There are more than forty universities in Britain—nearly twice as many as in 1960. During the 1960s eight completely new ones more founded, and ten other new ones were created __16__ converting old colleges of technology into universities. In the same period the__17__of students more than doubled, from 70, 000 to __18__ than 200, 000. By 1973 about 10% of men aged from eighteen __19__twenty one were in universities and about 5% of women. All the universities are private institutions. Each has its __20__governing cou---Does your brother serve in the army?
---No, not now. But he ________ in the army
for 8 years.
A.would serve
B.was serving
C.had served
D.served