All along the two wide streams,signs warn people to ____ ser
All along the two wide streams,signs warn people to ____ seriously polluted riverbanks and avoid eating fish in the river. A.keep off B.keep out C.keep away D.keep on 正确答案为A,但A与C意义类似,
keep off :to stay or cause to stay at a distance (from) (使)不接近; 挡住 They asked the spectators to keep off.他们要观众站开些.Danger! Keep off!危险!勿走近!Keep the children off.It's dangerous here!...