successor

董事会已经为她选定了职位的继任者。

The board has already chosen her ___successor for the position.

董事会最看好的她的继任者是现任首席财务官。

The board's favourite to be her ___successor is the current CFO.

副总统是宪法规定的总统继任者。

The vice president is the constitutional ___successor to the president.