4个单项选择题（大学英语）,
问题描述：
4个单项选择题（大学英语）,
1.This is a group of six boys ________ 14 to 17.
A.aged
B.ages
C.aging
D.age
2.We hurried on,our heads ________ against the wind,to the bright light ahead.
A.being bent
B.bent
C.was bent
D.was bending
3.After several months' study,I was able to easily read Japanese novels in the ________.
A.origin
B.reference
C.source
D.original
4.He has recently ________ golf for relaxation.
A.taken up
B.taken with
C.taken on
D.taken over
答
CBBA能跟我详细的解释一下为什么选这些吗？谢谢！1.age作为主动语态表示。。。多大了2. 原句=We hurried on with our heads bent3.in the reference 参考书目4、take on a hobby 开始养成。。习惯