why pay now when you can pay

why pay now when you can pay now you pay what we pay will you pay the bill when you have a dinner date with your girlfriend?RT why? 英语语法-什么时候用when什么时候用why?do you people really pay attention while you saying it?还是do you people really pay attention when you saying it? How do you like to pay when shopping,why?需要一分钟的回答 How do you like to pay when shopping,why?如何回答 When you want to give up,think of why I persist until now. Where are you now Where are you now When I need you the most Why don't you take my hand Now,I'll tell you ______you should pay attention to in an exam.A.why B.what C.unless（请附上详细解析） Why should you pay $10 to have a meditative,contemplative experience with strangers when you have a DVD player with surround sound at home? how much will you(give.pay) me?why Why aren't you getting dressed now? why you backing up now 什么意思? Why be you ,When you can be Please tell me why don't go back Please tell me when do you go home!Now waiting for you!汉语意思 are you sure you have to?it is been very late.i dont know_____.i can do it if not now.选项：where, why, when, how. when were you doing when i called you just now? Why not_____help when you were in trouble?