问题
选择题
She tried hard to keep calm in face of the students, but the sweat on her forehead _____ her ____.
A．gave; away
B．tuned; down
C．showed; out
D．shut; off
答案
A
句意：她努力地试图在学生面前保持镇定，但是她前额的汗水使她露了马脚。Give away: reveal露出了马脚；turn sb .down 拒绝；show sb.out带某人出去；shut sb.off使隔绝。