【题目】Jenny was a little nervous in front of so many strangers at first.But when she glanced at Jack，she immediately felt________.
A. in peace B. in need
C. at a loss D. at ease
在线课程【答案】D
【解析】
考查介词短语辨析。句意：Jenny一开始在很多陌生人面前感到紧张,后来看了一眼Jack，就感到自在多了。A. in peace和平的；B. in need需要的；C. at a loss迷茫的；D. at ease自由自在。根据句意，故选D。