18. The stories of rescuing trapped strangers in the earthquake highlight the huge efforts_______by Haitians themselves, as well as aid workers from around the world.

   A.  to be made     B.  being made   C.  having made   D.  to have made

The stories of rescuing trapped strangers in the earthquake highlight the huge efforts_______ by Haitians themselves, as well as aid workers from around the world．

A．to be made          B．being made       C．having made           D．to have made