There are so many viruses on the Internet. If ____ accidentally, the viruses may make

  your computer break down.[???:Z*xx*k.Com]

  A. downloading                                                         B. to be downloaded                  

  C. downloaded                                                    D. being downloaded

There are so many viruses on the Internet. If ____ accidentally, the viruses may make

  your computer break down.

  A. downloading                                                         B. to be downloaded                  

  C. downloaded                                                   D. being downloaded

There are so many viruses on the Internet. If ____ accidentally, the viruses may make

  your computer break down.

  A. downloading                                                         B. to be downloaded                  

  C. downloaded                                                    D. being downloaded

There are so many viruses on the Internet. If ____ accidentally, the viruses may make
your computer break down.[来源:Z*xx*k.Com]

A．downloading	B．to be downloaded
C．downloaded	D．being downloaded

 There are so many viruses on the Internet. If ____ accidentally, the viruses may make

  your computer break down.

  A. downloading                                B. to be downloaded            

  C. downloaded                                 D. being downloaded