单项选择题
A．every American cannot have guns. B．only soldiers and police can have guns. C．every American citizen can own guns. D．teachers have no money to buy guns.
A．it is likely to make an enemy of your admirer B．there are many solutions to the problems of dating C．an admirer has feeling every bit as sensitive as our own D．it is possible to discourage an admirer without hurting his feelings
A．our earth exists before the sun B．how space formed C．no one knows where the earth comes from D．our earth used to be part of a high mountain on the sun