Undernocircumstance_____totellliestoparents.
A、childrenareallowed_____ the teacher's suggestion, Tom finally found a way to settle the problem.
_____theteacher'ssuggestion,Tomfinallyfoundawaytosettletheproblem.
This robot is supposed to save a lot of labor, but it remains a problem if it ______.
Many workers were organized to clear away remained of the World Trade Center.
During the tourist season, there are many people wandering in this city to see the old castles _____ in the sixteenth century.