优题课 - 聚名师,上好课(www.youtike.com)
  首页 / 试题 / 高中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:880

In the past several weeks, many cities in Northern China________from heavy fogs, causing great inconvenience to people.

A.suffered B.have been suffering
C.were suffered D.had been suffered
登录免费查看答案和解析

Inthepastseveralweeks,manyciti