The sentence in which the adverbial clause modifies an adverb is <span>The Double Eagle II was a hot-air balloon that flew farther (than other hot-air balloons.)
The adverb it modifies is <em>farther.
</em><em /><em />All of the other sentences have clauses that modify verbs, not adverbs.
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D. shows the difference of greek and theater
I think he felt happy and thankful to all the people who had voted for him. knowing that they have faith in him and he believed that the people who had voted for him believed in him and put their trust in him.
