单项选择题A．Because books could be lent to everyone.B．Because books could be lent at no costs.C．Because books were lent to students and faculty.D．Because books were lent on a paid membership basis.

单项选择题A．About which house to buy.B．About which school to send their children to.C．About whether to buy the sailing-boat.D．About how to decorate the new house.