Help someone please do

Then she heard his step on the stair away down on the first flight, and she turned white for just a moment. the phrase "she turned white for just a moment" is mainly used to show that della has very fair skin. is afraid of jim's reaction. is beginning to get an illness. had become extremely angry.

Which form does a verb take when the subject receives the action?

Is the phrase"juggling is hard" a sentence or a fragment?