While ____ in tea with that dealer, Mr. Smith had himself ____.
A.trading; ripped off
B.buying; ripping off
C.selling; ripped off
D.purchasing; rip off
网友回答
A解析动词辨析和固定结构。Buy, sell和purchase都是及物动词，后面直接宾语。本题后面接了介词，所以排除BCD。第二空是固定结构have sth done,固定词组rip off盗窃；结合句意可知A正确。