An army spokesman stressed that all the soldiers had been ordered ________ clear warnings before firing any shots．

1. A.
   to issue
2. B.
   being issued
3. C.
   to have issued
4. D.
   to be issued

An army spokesman stressed that all the soldiers had been ordered ____ clear warnings before firing any shots.

    A. to issue       B. being issued        C. to have issued  D. to be issued

An army spokesman stressed that all the soldiers had been ordered _____ clear warnings before firing any shots.  

  A. to issue                      B. being issued                  C. to have issued               D. to be issued

An army spokesman stressed that all the soldiers had been ordered_____clear warnings before firing any shots.

A．to issue　 　　 B．being issued C．to have issued D．to be issued