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Complete the exhausted tour guide's diary entry about today's disastrous excursion by choosing the correct option for each blank.
We spent the morning wrangling thirty tourists, _________________________ wandered off to take selfies with a very angry moose.
By noon, we had lost five expensive cameras in the lake, _________________________ belonged to me, thankfully!
We spent the morning wrangling thirty tourists, half of whom wandered off to take selfies with a very angry moose.
When a relative pronoun follows a preposition (like "of"), we must use the object form "whom" for people, not "who." Using "half of them" would result in a comma splice because "them" is a personal pronoun, not a relative pronoun.
By noon, we had lost five expensive cameras in the lake, all of which belonged to me, thankfully!
"All of which" is correct because "cameras" are things (requiring "which"). "Neither of which" is incorrect because "neither" only refers to exactly two items, but here there are five cameras. "All of them" would cause a comma splice.