It’s reported that a plane with five people _______ crashed into the mountain several days ago.

  A. on board             B. on the board     C. in board           D. in the board

It's reported that a plane with five people ________ crashed into the mountain several days ago.

A．on board B．on the board

C．in board D．in the board

It’s reported that a plane with five people ________ crashed into the mountain several days ago．

1. A.
   on board
2. B.
   on the board
3. C.
   in board
4. D.
   in the board