1.A composition comprising HFC and HFO, wherein the composition comprises:1) HFC-32, HFC-125, HFC-134a, and HFC-134 as the HFC;2) at least one of HFO-1234yf and HFO-1234ze as the HFO; and3) at least one member selected from the group consisting of HCC-40, HCFC-22, HCFC-124...