问题
选择题
Although many great people ever failed, they never_______ and managed to succeed.
A．set out
B．stayed up
C．kept on
D．gave up
答案
答案：D
A. set out 出发 B. stayed up 熬夜 C. kept on 坚持 D. gave up放弃，
Although many great people ever failed, (虽然很多伟人曾经失败过)，但是他们都从没有 _______ 和最后都成功了。因此，选D。