How can I rewrite the following sentences with the word given in bracket?

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. Vietnamese people have been prepared perfectly for the 22nd Sea Games. (made)
  2. Vehicles also account for air pollution. (explanation)
2

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1-- The Vietnamese people have made themselves perfectly ready for the 22nd Sea Games.
2-- One explanation for the air pollution is vehicle emissions.
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