wish it would...
When speaking about wish statements, why is it okay to give the short answer form for an action verb (e.g. snow), but not for be + adjective (e.g. to be sunny).
For example, we say “It won’t rain tomorrow, but I wish it would.”
But, “It won’t be sunny tomorrow, but I wish it would be.”
What is the distinction we make here, or is it just an arbitrary rule that we use be?