ThefirstHarbinInternationalEconomicandTradeFair

问题详情：

The first Harbin International Economic and Trade Fair________ in fair________ China’s window to Russia and other Eastern Asian countries ever since.

A．held；had become

B．was held；had become

C．held；has become

D．was held；has become

【回答】

D

知识点：一般过去时及其被动式

题型：选择题