The boy whistled like a bird and rode into the pond where it was deepest and as he passed the rosebush he plucked a rose and stuck it in his hat Now he looked dressed and rode on The other roses looked after their sister and asked each other Where can she be going to But none of them knew

Could you correct the punctuation please?
The boy whistled like a bird, and rode into the pond where it was deepest, and as he passed the rose-bush he plucked a rose and stuck it in his hat. Now he looked dressed, and rode on. The other roses looked after their sister, and asked each other, Where can she be going to? But none of them knew.