{{B}} pAssAgE onE quEstions 26 to 28 ArE BAsED on thE pAssAgE you hAvE just hEArD、{{/B}}

A．thEy shoulD hElp mAintAin thE EquipmEnt.
B．thEy shoulD kEEp A wAtChFul EyE on thEir ChilDrEn.
C．thEy shoulD stop thEir ChilDrEn From ClimBing lADDErs.
D．thEy shoulD tEACh thEir ChilDrEn how to usE thE EquipmEnt.