Once environmental damage ______, it takes many years for the system to recover.

游客2023-09-28 19

问题 Once environmental damage ______, it takes many years for the system to recover.

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

答案 D

解析

转载请注明原文地址:https://tihaiku.com/zcyy/3052783.html

相关试题推荐

随机试题

最新回复(0)

Thiskindofair-conditioningsystemispracticalandeconomicalfortheneedso