—Mum, I've finished my work.
—Good, and you choose to play on your PSP or listen to music on your iPod, you mustn't disturb me.
A. whichever
B. whether
C. whatever
D. no matter
网友回答
A. whichever
(答案→)B. whether
C. whatever
D. no matter
解析：答语意为“不错，无论你是选择用PSP玩游戏还是用iPod听音乐，不许打扰我”。whether引导让步状语从句，表示“无论……”。从句中不缺少主语、宾语和定语等成分，因此不可选A项和C项；no matter不能直接引导让步状语从句，应用“no matter＋疑问词”。故答案为B项。