Which sentence contains an adverb clause?. A. Only 250 covered bridges exist nationwide. B. Covered bridges remind us of days go
ne by. C. The Lehigh Valley, in eastern Pennsylvania, has seven covered bridges. D. If you visit Pennsylvania, you should take the self-guided, covered-bridge tour.
An adverb clause consists of words that functions as an adverb which modifies a verb, adjective and an adverb. In the given sentences above, the sentence that contains an adverb clause is option D. If you visit Pennsylvannia, you should take the self-guided, covered-bridge tour.
