在清算窗口时间内，弥补透支和清算排队的支付业务后，立即关闭支付系统清算窗口，进行日终处理。
参考答案：对
— Hello. May I speak to Tom?
— I'm sorry. You ____ the wrong number. There's no one here by that name. [ ]
A. may have
B. must have
C. must have had
D. would have had
Little ______ about his own health though he was very ill.
A．he care
B．he cares
C．does he care
D．did he care
