Which sentence contains an adverb clause?
AIf you visit Pennsylvania, take the self-guided, covered-bridge tour.
BThe Lehigh Valley, in eastern Pennsylvania, has seven covered bridges.
COnly 1,600 covered bridges exist in the world.
DCovered bridges remind us of days gone by.
AIf you visit Pennsylvania, take the self-guided, covered-bridge tour.
BThe Lehigh Valley, in eastern Pennsylvania, has seven covered bridges.
COnly 1,600 covered bridges exist in the world.
DCovered bridges remind us of days gone by.
