On arriving in England ⋯ ____they arrived in England ⋯. A. On B. Why C. When D. Where

On arriving in England ⋯ ____they arrived in England ⋯. A. On B. Why C. When D. Where

The correct answer is C. When.

Here’s the explanation:

The sentence uses the structure "On arriving..." which means "As soon as they arrived" or "Immediately after they arrived."

To rewrite the sentence with the same meaning using a clause (subject + verb), you need to use "When" to introduce the time clause.

"On arriving in England" = "When they arrived in England"

The other options don't fit grammatically or logically:

A. On: Would require a gerund ("On they arrived" is incorrect).

B. Why: Implies a reason, which doesn't fit the time context.

D. Where: Implies a place, which is already covered by "in England."

So the complete sentence is: When they arrived in England.