81.  They started to put out the fire.

82.  They used water for putting out the fire very soon.

83.  Luckly , when the firefighters came, the fire was put out and the house which caught fire was saved.

84.  How to put weekends to good use?

85.  So I must put weekends to good use.

86.  Put some soil in a box, sow the tomatoes' seed carefully, and cover it with more soil.

87.  While they were putting out the fire together, the firemen arrived.

88.  The firemen joined to them to put out the fire at once.

89.  Finally, the fire was put out by them.

90.  Put some soil in a box, then cover it with more soil.