

anh/chị giải thích giúp em câu này ạ. em cảm ơnnn
1. -"why are they taking down the decoration"
-"the concert (be) ___ over they are putting everything back in its place"
A. being b. is c. has been d.should be
1. -"why are they taking down the decoration"
-"the concert (be) ___ over they are putting everything back in its place"
A. being b. is c. has been d.should be