Prepositions within relative clause structures
Q1. The house ___ which he lives is Victorian
IN WHICH is formal. 'Where he lives' is informal. Victorian architecture endures.
Q2. The day ___ which we met was rainy
ON WHICH for specific days. Rain is remembered. Romance may have begun.
Q3. The time ___ which we arrived was inconvenient
AT WHICH for precise times. Inconvenience is noted. Timing is everything.
Q4. The person ___ whom you spoke is unavailable
TO WHOM is formal. Unavailability is confirmed. Calls go unanswered.
Q5. The tool ___ which he fixed it is missing
WITH WHICH indicates instrument. Tools vanish mysteriously. Repairs succeeded.