题干
一 Long time no see!
— I've just retuned. I to Zhengzhou for a meeting last month.
A：am sent
B：was sent
C：am sending
D：was sending
答案(点此获取答案解析）
B
一 Long time no see!
— I've just retuned. I to Zhengzhou for a meeting last month.
A：am sent
B：was sent
C：am sending
D：was sending
