In this task you are given a sentence. You must judge whether subject of the main clause is singular or plural. Label the instances as "Singular" or "Plural" based on your judgment.

There's a mumbling from the heap.
Singular

With a flounce of her skirts, the maid disappeared.
Singular

His best cutting was when you brought that C-17 in with no engines on a dirt airfield in California.

Singular