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Complete the undercover alien's logbook entry by choosing the correct words for each gap.
Today, I spent _________________________ hour observing humans at _________________________ university. It was fascinating, though I still don't understand why they carry heavy bags on their backs.
Today, I spent an hour observing humans at a university.
The rule for "a" vs. "an" depends on the sound at the beginning of the next word, not just the letter!
"Hour" starts with a silent 'h', so it begins with a vowel sound (our), meaning it takes "an".
"University" starts with a vowel letter ('u'), but it makes a consonant sound ("you"), so it takes "a".