选择恰当的短语填入下列句子中。(注意短语在语境中的正确形式）

with butterflies in one’s stomach                 have a frog in one’s throat go all out               keep in mind               before jumping in with both feet

【小题1】________, I breathed deeply.
【小题2】But then I figured I’d better just ________ and see what happens.
【小题3】Why don’t you also take my advice and think carefully ________?
【小题4】But we need to ________that what we see on social media is often not the whole truth about a person.
【小题5】He told us that Maggie couldn’t teach that day COZ she ________.