【题目】Charles Yerkes, a wealthy American businessman, _______the job improving the system by obtaining ______of the many different lines.
A.overtook; invitation
B.undertook; authority
C.underwent; reputation
D.undertook; ownership

【答案】D
【解析】考查动词时态和名词。句意：一名叫查尔斯·耶基斯的美国富商通过获得许多不同线路的所有权承担起了改善整个系统的工程。D项符合语境。