【题目】He failed in the driving test again. He_____________.
A. must have disappointed B. must have been disappointed
C. might be disappointed D. couldn’t be disappointed
在线课程【答案】B
【解析】
试题分析：考查动词。句意：他又没通过驾照考试。他肯定很失望。根据句意可知是失望的，disappointed是形容词，要用系动词，故选B项。