پاسخ سوال 6) a
(to) change one’s mind: to change one’s opinion or decision.
Example: Brandon wasn’t going to take a vacation this year, but then he changed his mind and went to Bora Bora for two weeks.
Example: Why aren’t you applying to medical school this year? Did you change your mind about becoming a doctor?
پاسخ سوال 7) c
When pigs fly! [slang]: never
Example: Will Ted teach Nicole how to play the guitar? When pigs fly!
Example: Sure, I’ll give you my new laptop. When pigs fly!
Synonyms: when hell freezes over; never in a million years