单项选择题
A．save energy B．check e-mails C．study efficiently D．organize activities
A．Banking and insurance services． B．Research and business planning。 C．Organization and management． D．Determination and originality．
A．At 1 p.m. tomorrow． B．At 2 p.m. today． C．At 3 p.m. tomorrow． D．At 4 p.m. today．