30．When you finish your work, don’t forget to put the tools back where they ________．

       A．are                 B．will be              C．were          D．had been  

When you finish your work, don’t forget to put the tools back where they ________．

1. A.
   are
2. B.
   will be
3. C.
   were
4. D.
   had been

When you finish your work,don’t forget to put the tools back where they 　　 . w*w*w*A.are　 B.will be C.were　 D.had been

When you finish your work，don’t forget to put the tools back where they      ．

    A．are    B．will be    C．were    D．had been