the question caught me off my guard and I didn't know what to 特别是catch me off my guard
问题描述：
the question caught me off my guard and I didn't know what to
特别是catch me off my guard
答
catch sb off guard是乘人不备，措手不及。这道题让我措手不及，我不知到说什么了。
答
这个问题太难了，我不知道怎么回答：）
答
catch me off my guard---- I was not prepared for the question.
就是 这个问题难倒我了
这个问题难倒我了,我不知如何回答才好