题目内容
Forests ________ and bum at such a fast speed that they will disappear from the earth in the near future, if no immediate action is taken.
- A.felled
- B.are felled
- C.are being felled
- D.had been felled
C
这是一个含有条件状语从句的主从复合句。主句又是一个含有结果状语从句的主从复合句,主句主语为Forests,并列谓语为fell和burn,很明显要求用被动语态。句中…will disappear from the earth in near future暗示了森林不断受到砍伐和烧毁,这一持续的动作要求用进行时,所以答案选C。
这是一个含有条件状语从句的主从复合句。主句又是一个含有结果状语从句的主从复合句,主句主语为Forests,并列谓语为fell和burn,很明显要求用被动语态。句中…will disappear from the earth in near future暗示了森林不断受到砍伐和烧毁,这一持续的动作要求用进行时,所以答案选C。
练习册系列答案
相关题目