Fix the grammar mistakes: As we know, ordinary car's fuel is gas which is used since the first car has been produced.
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The first sentence is correct.
The second sentence is incorrect.
The first sentence is correct.
The second sentence is incorrect.
The first sentence is correct.
The second sentence is incorrect.
The first sentence is correct.
The second sentence is incorrect.
The first sentence is incorrect.
The second sentence is correct.
The first sentence is incorrect.
The second sentence is incorrect.
The first sentence is correct.
The second sentence is incorrect.
The first