问题
选择题
I tried my best to keep calm in face of the students, but the sweat on my forehead _____ me____.
A．gave; away
B．tuned; down
C．showed; out
D．shut; off
答案
A
句意：我尽最大努力在学生面前保持镇定，但是我前额的汗水使她露了马脚。give away 露出了马脚；turn sb .down 拒绝；show sb.out带某人出。