A、how mAny nAtivE spEAkErs it hAD in shAkEspEArE’s timE.
B．thE numBEr oF pEoplE with An ADEquAtE working knowlEDgE oF it.
C．thE situAtions whErE A Common lAnguAgE is nEEDE
D、
D、thE purposEs For pEoplE to lEArn A sEConD, lAnguAgE.