---- Dad , why should I stop ____ computer games ?

----- For your health , my boy , I’m afraid you _______ .

A．to play; must

B．playing; have to

C．to play ; can

D．playing ; may

（）是一般商业信用保险的承保标的。

A.中介人的商业信用

B.投保人的商业信用

C.被保证人的商业信用

D.责任人的商业信用