问题
选择题
After a long walk, Mary’s legs _____ and she couldn’t run any further.
A．gave out
B．broke out
C．tired out
D．stuck out
答案
答案：A
考查词组辨析：A. gave out分发，耗尽（不及物）B. broke out爆发C. tired out精疲力竭，是及物动词短语 D. stuck out伸出，句意：走了很长时间，玛丽的腿没了力气，不能在走了。选A。