"that's a good question." "let me get back to you on that." "I'm glad you asked b/c I'm not sure." "i want you to research that and get back to me tomorrow. extra credit may be involved." change the subject.
if you dont know dont answer! dont just say hello i dont know
how do you are rude in Brazil ?
what you say when you dont know what to say.
YOU SAY AM SO SORRY I DONT KNOW (say it with sincere)
you just say i dont know what you're talking about
it is somthing you say when you dont know what to say.
i dont know! didnt you just say it!-.-
i dont know yes
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i can honestly say, i dont know
dont you know
SRRY, dont know