单选题
After his wife"s death, he was on the verge of a ______.
A、
breakdown
B、
breakout
C、
break-in
D、
breakthrough
【正确答案】
A
【答案解析】
A.崩溃;B.脱逃;C.打断,闯入;D.突破。on the verge of breakdown意为“处于崩溃的边缘”。
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