游客
题文

All possible means ___ been tried to stop the air______.

A.has, polluted B.have, polluting
C.have, being polluted D.has, being polluted
科目 英语   题型 单选题   难度 较易
知识点: 动词语态
登录免费查看答案和解析
相关试题

Although, it's raining, ____are still working in the fields.

A.they B.but they C.and they D.so they

There’s something _______ her that I really don’t like.

A.with B.for C.to D.about

I know nothing about the young lady ___she is from Beijing.

A.except B.except for C.except that D.besides

It rained heavily,____ the basketball match had to be put off.

A.so that B.when C.otherwise D.therefore

Does John know any other foreign language ___French?

A.except B.but C.besides D.beside

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号