That’s a good I want to be a doctor :)
Answer:
The young man sat in a chair, indolently flipping through a magazine.
The mirage of the oasis faded, leaving only the shimmering sands before the men.
The music faded, taking it's sensuous sounds with it.
We need tangible evidence to convict.
Her youth and vitality were apparent.
Explanation:
On is the only preposition in this sentence. A preposition shows location, such as, on, over, beside, etc.