always walk on the sidewalk.if ther is no sidewalk,walk o___

You should walk at the sidewalk or at tile side of tile road People are walk along the sidewalk.这句话哪项错了,怎么改 -Is Susan in?-No,she is o___.She always goes o___for a walk Still,he shouted as he ___ on the cold sidewalk The man is too o___ to walk 根据首字母写 if you are on a sidewalk near buildings when an earthquake__ Do we need( )on the sidewalk?Yes Everyone should( )the traff sidewalk什么意思 meant ,stary,sidewalk there is no reason why a man should walk on the outside of a People always walk on the _____ ____in th walk on the water?