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Read the tired zombie's diary entry about his exhausting shifts at the local haunted house. Select ALL the sentences that use "every" or "all" correctly to describe his schedule.
The correct answers are I groan and shuffle through the hallways every night. and Yesterday, I groaned and shuffled through the hallways all night.
Every night means "each night" (Monday, Tuesday, Wednesday, etc.), and "every" must be followed by a singular noun.
All night means "the entire duration of one night" from start to finish.
You cannot say "every nights" (plural) or "all nights" (in this specific context of a single continuous shift).