单项选择题
A．could be thrown B．had to be thrown C．must throw D．should throw
A．you will spend more money than planned B．you will bring along a limited amount of money C．you will find it convenient to buy everything D．you will not feel worried about your money
A．you will not hurry to buy things you wish to have B．you may not go shopping for things you don't need C．you will only go shopping for things you may need D．you may not hurry to buy things not exactly needed