[1] A: She is not a good teacher. Me: if I agree with A, should i say yes or no? [2] A: you have't had your dinner. Me: if i haven't, do i ought to say no? (like the way to answer antisense question) [3] A: are you sure you don't want to join us? Me: if i don't want to join them, which one should i choose? yes or no? thx!
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