-Long time no see!-I've just returned.I……to Zhengzhou for a meeting last months.

问题描述:

-Long time no see!-I've just returned.I……to Zhengzhou for a meeting last months.
A、am sent
B、was sent
C、am sending
D、was sending

B、was sent
被送去,用被动语态
last months.为确定的过去时间,用一般过去时为什么是被送?因为是被(单位、领导......)派送......,去郑州参加会议