YOU HAD BETTER ………AT HOME UNTIL YOU FEEL BETTERA.STAY B.TO STAY C.S...

21. - ON TAP KHOI 11 HK II 2010 CO DAP AN
ON TAP KHOI 11 HK II 2010 CO DAP AN

21.you had better ………at home until you feel better

A.stay B.to stay C.staying D.stayed