C
have sth done 固定搭配,have the system recovered ,让生态系统恢复
once harm is done to the environment,it takes years to have the system _
once harm is done to the environment,it takes years to have the system _
A recover
B recovering
C recovered
D to recover
A recover
B recovering
C recovered
D to recover
英语人气:220 ℃时间:2019-10-09 09:11:31
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