沪友详解A：
cat get one's tongue =something you say to someone when you are annoyed because they will not speak

例句
1、Has the cat got your tongue?
[口]猫把你的舌头叼去了吗？为什么不吭声？。
2、One may hold one's tongue in an ill time.
时辰不利休开口。
3、wag one's tongue; speak about others and reveal secrets or intimacies.
咬舌头；谈论别人并揭示出别人的秘密或隐私。 4、"What is you dolly's name?" the visitor asked. "The cat's got her tongue, I think," the mother replied for her.
“你的洋娃娃叫什么名字？”客人问道。“他的舌头被猫叼走了。”女孩子的母亲替他答道。