Once damage______, it takes many years for the natural environment to recover.A、

游客2024-01-14 25

问题 Once damage______, it takes many years for the natural environment to recover.

选项 A、has done
B、is to do
C、is to be done
D、is done

答案 D

解析这是一道语法题，考点是动词的时态。该句子讲的是普遍真理，因此要用一般现在时。

转载请注明原文地址:https://tihaiku.com/zcyy/3362215.html

相关试题推荐

随机试题

最新回复(0)

Thechemicalfactorywasdemolished()protectingtheenvironment.A、inspiteofB