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It's right to give seats to the elderly.
It's good to help the blind cross the road.
It's proper to take care of a lost pet.
It's helpful to donate money to charities.
It's necessary to keep parks clean.
It's important to plant more trees.
Try to be warm-hearted（热心的）volunteers
It’s meaningful to work as a volunteer.
It's necessary to help the people in need.
We can use ‘It's +adj.+to do sth.’ to talk about the feeling of doing sth.
It is
adjective
to do sth.
+
+
Work out the rule
Try to be warm-hearted（热心的）volunteers
What do you think of volunteers’ work?
It’s +adj.+ to do sth
do some cleaning
pick up litter
keep order
do some translation
show the way
give some information
Problems volunteers face
always stand in the hot sun
work for a long time
speak different languages
walk a long way