Michael went to the library to research his topic, use the computers, and study for a test. The purpose of the commas in this sentence is to

introduce a list of items.
indicate an interruption.
set off extra information.
separate items in a series.

shakespeare was famous for writing in iambic pentameter, which is a specific way of rhyming sonnet lines in ten syllables. there are also forms of unrhymed iambic pentameter, as in macbeth, with the noble characters.

earthquake is the answer i remember doing this last year