单项选择题
A．The receipt had been stolen by someone. B．someone had taken away the case. C．He could not claim his case without the receipt. D．He had left his receipt at hom
A．There are less opportunities today to start a business because customers are always dissatisfied. B．There are many opportunities today to start a business with a simple reason. C．Customers’ dissatisfaction means you can start a business to satisfy them. D．Never start a business if customers are dissatisfie
A．undertaken only when absolutely necessary B．a fundamental and life long preoccupation C．something he successfully avoided throughout his life D．something to which he always wished to devote more time and attention