问题补充：
—What was the trouble with you yesterday?
— When I practised running on the playground, my strength and I fell onto the ground.
A. gave in
B. gave out
C. gave off
D. gave away
答案：
A. gave in
(答案→)B. gave out
C. gave off
D. gave away
解析：句意:--昨天你怎么啦?--当我在操场跑步时，我累的筋疲力尽，然后就摔倒了地上。give in 屈服；give out筋疲力尽，分发； give off发出； give away放弃。根据句意故选B。
