You are using context clues since you're using the surrounding words to help you figure it out.
Answer:
o 4.Ww all sang "Across The Prairie."
<span> Good writing includes a variety of sentence structures, including simple, compound and complex sentences. </span>
<span>CPU is a Central processing unit, it carries out instructions of a computer program. performing basic operations, which are specified by instructions. Hard drive is data storage device. Both CPU and Hard drive are found in System Unit(System Case). So the answer to your question will be a computers CPU and hard drive are found in the System Unit.</span>
