Both you and Tom ---(have)made such a mistake.顺便翻译一下.

问题描述:

Both you and Tom ---(have)made such a mistake.顺便翻译一下.

have 你和tom都犯了这样的错误。

had

have
句子意思:你和Tom都犯了这样一个错误

Both you and Tom -have--(have)made such a mistake.
你和汤姆都犯了那样的错误。