精英家教网 > 高中英语 > 题目详情

Once harm ______ to the environment, it takes years to have the system recovered.

A. does                   B. is done                 C. will be done        D. be done

练习册系列答案
相关习题

科目:高中英语 来源:20102011年浙江省温州市十校联考高一下期末考试英语试题 题型:单项填空

Once harm is _______ to the eco-system, all species will ________, including man himself.

A. made; be in danger                  B. done; be dangerous  

C. caused; be endangered               D. done; be in danger

 

查看答案和解析>>

科目:高中英语 来源: 题型:

Once harm ______ to the environment, it takes years to have the system recovered.

A. does      B. is done  C. will be done    D. be done

 

查看答案和解析>>

科目:高中英语 来源: 题型:

Once harm ______ to the environment, it takes years to have the system recovered.

A. does    B. is done  C. will be done    D. be done

 

查看答案和解析>>

科目:高中英语 来源: 题型:

Once harm ______ to the environment, it takes years to have the system recovered.

A. does                 B. is done                C. will be done         D. be done

查看答案和解析>>

科目:高中英语 来源:2010年上海市虹口区高三下学期质量监控考试(英语) 题型:单选题

Once harm ______ to the environment, it takes years to have the system recovered.

A.doesB.is doneC.will be done D.be done

查看答案和解析>>

同步练习册答案