He accidentally that he had quarreled with his wife and that he hadn’t been home for a c

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(答案→)A. let out
B. took care
C. made sure
D. made out
解析：
A 句意：他无意间透露了他和妻子吵架了，已经有几个星期没有回家了。let out泄露，透露（消息等）；take care小心（不能带宾语）；make sure确信，务必；make out辨认出，理解，了解。