It was not rare(稀少) in that people in fi
题型：选择题
问题：
It was not rare(稀少) in that people in fifties were going to school for further study.
A．90s; the
B．the 90s; /
C．90s; their
D．the 90s; their
It was not rare(稀少) in that people in fifties were going to school for further study.
A．90s; the
B．the 90s; /
C．90s; their
D．the 90s; their