In the recent coal mine accident, only 24 miners were rescued, and 29 were left ________ underground．

1. A.
   to be trapped
2. B.
   trapped
3. C.
   being trapped
4. D.
   trapping

In the recent coal mine accident，only 24 miners were rescued，and 29 were left ___ underground．

A．to be trapped                                       B．Trapped

C．being trapped                                      D．trapping