Hannah was busy with work then but she still tried her best to       some time from her tight schedule to visit her mother.

A．cut out

B．squeeze out

C．leave out

D．dig out

其他制造费用可以按固定资产原值（扣除所含的建设期利息）的一定比例估算，也可以按（）估算。

A．营业收入

B．工资及福利费总额

C．人员定额

D．经营成本