单项选择题
A.it took B.it takes C.it is being taken D.it has been taken
The boy（）to school already.A.has takenB.has been taking...
单项选择题The boy（）to school already.
A.has taken B.has been taking C.is taken D.has been taken
It's not safe（）in the street.A.playedB.playC.playingD.p...
单项选择题It's not safe（）in the street.
A.played B.play C.playing D.plays
He carried on（）after his accident.A.to workB.workC.work...
单项选择题He carried on（）after his accident.
A.to work B.work C.working D.worked
