Answer:
#3 #4 #5 #6 #8 #9 and #10
Explanation:
Something that many people complain about are traffic jams.
a good solution might be to spend money on low-energy light bulbs.
is ecology something you care about?
what ecological issues are you particularly worried about?
somthing we need to work on is global warming.
what achievement is he famous for?
we were pleased with a solution that she provided.