<span>We need rain that would clear the dust from the sky and end the drought.
NOT:
</span>We need rain. This would clear the dust from the sky and end the drought.
We need rain to clear the dust from the sky and end the drought.
<span>To clear dust from the sky and end the drought, we need rain.</span>
Copernicus should be the topic, and the central idea should be how he came up with the heliocentric theory. I hope I helped, please tell me if I am incorrect or if you need more help!
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