Once environmental damage( ),it takes ma

考试题库2022-08-02  23

问题 Once environmental damage( ),it takes many years for the system to recover.A.has done B.is to do C.does D.is done

选项 A.has done
B.is to do
C.does
D.is done

答案 D

解析 考查被动语态。当do作“造成”解时,为及物动词,因空格后没有宾语,所以应用被动语态,因此D项正确。故本题选D。句意:环境系统一旦被破坏,需数年才能恢复。
转载请注明原文地址:https://tihaiku.com/gongwuyuan/2634718.html

最新回复(0)