题目内容
The poor mother when she heard the news that her only son had been killed by the enemies.
| A.broke out | B.broke down | C.broke up | D.broke off |
B
考查短语辨析。break out(战争,火灾等)爆发;break down抛锚;击垮;break up破裂;break off打断。根据句意选B。
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