Relier Pairs C22U4LA Voc Not bVersion en ligne What do these idioms mean? Match the columns. par Modern English 1 be a guinea pig 2 be a fish out of water 3 have butterflies in your stomach 4 have ants in your pants 5 clam up 6 get off your high horse 7 beat a dead horse 8 be in the doghouse waste your time on something not fit in, be out of place be the subject of an experiment be anxious or excited to do something not say anything, perhaps because you feel uncomfortable be nervous be in trouble stop being superior