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Read the eccentric billionaire's last will and testament. Select ALL the clauses that legally and grammatically complete the sentence!
I leave behind my collection of 42 cursed antique clocks, _____
The correct answers are none of which have ever told the correct time. and half of which are currently ticking backwards.
In a non-restrictive relative clause referring to things, we use a quantifier + "of" + "which" (e.g., none of which, half of which).
"Some of them" creates an illegal comma splice. "All of that" is incorrect because we cannot use "that" after a preposition in a relative clause. "Two of which they" is incorrect because it contains a double subject ("which" and "they").