Missionaries traveled throughout Western Europe established Latin as the lingua franca by the end of the seventh century.
Atraveled正確答案
Bas the
Cby
Dthe seventh
答案與詳解
句中已有主要動詞 established,traveled 應改為現在分詞 traveling 構成分詞片語,或改為 who traveled 構成形容詞子句來修飾主詞 Missionaries。
