Question

He tried hard to keep calm in face of the policemen, but the sweat on his forehead _________.

A．turned him down

B．gave him away

C．showed him out

D．shut him off

Answer 1

B

 本题考查动词短语辨析。句意：面对警察，他努力保持冷静，但他额头上的汗让他露出了马脚。give away出卖。turn down拒绝；show out送出（客人）shut off关掉，与shut down意思相近。