Lee: After reading the report, I put it away in the safe. Lin: ____________________
AVery well. You must have thrown it away.
BOh, it must be very important.正確答案
CWhy are you so careless?
DWhy not sell your safe?
答案與詳解
對方把報告鎖進保險箱,自然推論這份文件很重要,must be 表「一定是」的合理推測,最符合對話邏輯。
