题干

The spread of the Ebola virus in Nigeria is believed ______ by August, 2014.(   )
A.to be controlledB.to have been controlled
C.to controlD.to have controlled
考点:不定式
上一题 下一题 0.64难度 单项选择 更新时间:2016-02-29 03:03:58

答案(点此获取答案解析)