10.Every possible means to prevent the air pollution, but the sky is still not clear. A.are being used B.have been used C.has been used D.had been used 查看更多

 

题目列表(包括答案和解析)

Every possible means ______ to prevent the air pollution, but the sky is still not clear.

A. is used        B. are used           C. has been used   D. have been used

查看答案和解析>>

Every possible means ______ to prevent the air pollution, but the sky is still not clear.

A. is used    B. are used    C. has been used     D. have been used

查看答案和解析>>

Every possible means ___ to prevent the air pollution, but the sky is still not clear.

A.is usedB.are usedC.has been used D.have been used

查看答案和解析>>

Every possible means _____ to prevent the air pollution, but the sky is still not clear.

A. is used B. are used C. has been used D. have been used

 

查看答案和解析>>

 Every possible means ___ to prevent the air pollution, but the sky is still not clear.

         A.is used       B.are used     C.has been used                  D.have been used

 

查看答案和解析>>


同步练习册答案