How often should the man take the medicine？A．Three times a day with meals.B．Three times a

How often does the event take place？A．Every monthB．Every six monthsC．Every yearD．Every two

How does the man pay the cost of electricity and water？A．It should be paid in advance.B．It

How often should the lubricating oil of a diesel engine be changed？A.After every tripB.Eve

According to the writer how often should parents

Man should take the philosophy of thrift by conse

It is curious how often sympathy for the old and infirm takes a form. which actually humil