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1. Don't throw these things away because they can be making into new products
making=>made
2. To take part active in this charity program, I suggest saving money and helping the poor in our neighborhood.
active=>actively
3. I think that these ordinary light bulbs should be replaced of energy-saving bulbs.
of=>by
31 D=>can stay
32 C=>bỏ
33 B=>have been built
34 A=>were
35 C=>has
31 fluent => fluently
32 setting => to ste
33 has => is
34 about => for
35 The nitrogen => nitrogen
31 including => includes
32 discover => discovery
33 would => will
34 are => is
35 grown => growth
31 a few => a little
32 in the morning a new bike => a new bike in the morning
33 are => is
34 foot => feet
35 before => by
31 excited => exciting
32 isn't it => hasn't it
33 to be => being
34 UNESCO's list => thêm s
35 firstly saw - first saw
