—I hear that Tom can't afford his schooling this fall．

    —____, let's do something for him．

    A．If so            B．When necessary  C．When possible D．If any

—I hear that Tom can’t afford his schooling this fall．
—____, let’s do something for him．

— I hear that Tom can’t afford his schooling this fall.
— _____, let’s do something for him.

— I hear that Tom can’t afford his schooling this fall.

— _____, let’s do something for him.