Select the most appropriate option to fill in the blank.
He lost his mother when he was seven and his father when he was thirteen, ______ which the orphan boys were sent off by guardian uncles to a grammar school at Hawkshead.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. upon.
He lost his mother when he was seven and his father when he was thirteen, upon which the orphan boys were sent off by guardian uncles to a grammar school at Hawkshead.
1. When to use upon: To refer to an event that is followed immediately by another event.
2. When to use before: To refer to an order of events in the past or future.
3. When to use on: It has a similar usage to 'upon' but it is used more in an informal setting.
4. When to use against: To refer to negative or opposing reactions to situations, beliefs, people, events, etc.
Hence, upon is the correct answer.