I know how to use computers, but I don't really understand the ______ of how they work. A. ups and downs B. ins and outs C. on and off - Idioms | English Grammar Quiz

I know how to use computers, but I don’t really understand the ______ of how they work.

A. ups and downs

B. ins and outs

C. on and off

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Quotation Marks Regular vs. Irregular Verb Type of Sentences

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