Question

Tony knows China very well because he ______ in China for twenty years. A．works B．was worki.

Tony knows China very well because he ______ in China for twenty years. A．works B．was working C．will work D．has worked

Answer 1

D

试题分析：句意：Tony对中国了解得非常清楚因为他在中国工作了二十年。for+一段时间，往往用现在完成时。根据题意，故选D。