问题
选择题
After climbing the hills in the natural park for hours, my legs _ under me and I failed to keep pace with others．
A．gave out
B．gave up
C．gave in
D．gave away
答案
答案：A
题目分析：A．gave out 分发，精疲力竭，用完，B． gave up放弃，C． gave in屈服，D． gave away泄露，赠送，句意：在自然公园爬山几小时后，我的腿精疲力竭，我赶不上其他人了。根据句意选A。