something must be done to ______ the bird flu.Something must be d_英语解答

something must be done to ______ the bird flu.
Something must be done to ______ the bird flu.
A) turn off B) take off C) put off D) keep off

人气：353 ℃　时间：2019-09-21 06:22:52

解答

选d
keep off 避开；防止；挡住
防止禽流感