时态和语态
(共3组,每组限时8分钟)
[一模题组]
1.(2013•大连第一次双基测试)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
解析:选b 考查时态和语态。句意:在过去的几个星期里,中国北方的许多城市一直遭受着浓雾天气,给人们带来了极大的不便。由“in the past sev