正确答案应该是:
helen wants to read the new words for the class.【改为一般疑问句】
【Does】helen【want】to read the new words for the class?
jim goes to school by bike every day.【改为否定句】
jim【doesn't】【go】to school by bike every day.
he is good at swimming.【改为同义句】
he【does】【well】in swimming.
be good at=do well in 擅长于