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The sun can "вставать" but it cannot "ложиться", the sun can "садиться". Don't trust to textbooks too much.[/quote]
I think, it's all right. Just poetic language.

I think so.
"Качать" means to make something do oscillatory movement. Leaves do random movement (not oscillatory) under the influence of wind. So "качать листьями" sounds at least weird.

All right except for "подул". You can't put "подул" here because "качал" and "исчезал" have imperfective aspect, and "подул" has perfective aspect. Therefore, "набегал" is only right variant of the...