He has to_________ 20 yuan on the book. But I needn’t _______ any money for it.

A．pay; spend

B．cost; pay

C．spend; pay

D．take; spend

When I met Daniel at the station ______ the first time, he was in the waiting hall _____.

A．for; alone　

B．at; alone

C．for; himself

D．at; by himself