In which sentence does the underlined adverb clause modify an adverb?

when the double eagle ii landed in paris, other balloonists who had planned to cross the atlantic cancelled their trip.

three men crossed the atlantic ocean in the double eagle ii in 1978.

some balloonists who had tried to cross the atlantic ocean disappeared before they were able to land.

the double eagle ii was a hot-air balloon that flew farther than other hot-air balloons.

In which sentence does the underlined adverb clause modify an adverb?

1. When the Double Eagle II landed in Paris, other balloonists who had planned to cross the Atlantic cancelled their trip.

2. Three men crossed the Atlantic Ocean in the Double Eagle II in 1978.

3. Some balloonists who had tried to cross the Atlantic Ocean disappeared before they were able to land.

4. The Double Eagle II was a hot-air balloon that flew farther than other hot-air balloons.

The adverb it modifies is "farther".  

All of the other sentences have clauses that modify verbs, not adverbs.

what do u need with

a personal narrative essay is about a personal experience, so it is usually written in the first person. to maximize its impact, the essay should: be written to have an emotional impact on the reader. include a lot of references to sensory perceptions and hope i