来自孙岳的问题
英语动词的非谓语形式Specialattentionshouldbepaid_____ourearthfrom___A.toprevent;beingpollutedB.toprevent;pollutingC.topreventing;beingpollutedD.topreventing;pollute
英语动词的非谓语形式
Specialattentionshouldbepaid_____ourearthfrom___
A.toprevent;beingpollutedB.toprevent;polluting
C.topreventing;beingpollutedD.topreventing;polluted
1回答
2020-12-25 05:42