How much are those black trousers用Whant is the price……怎么改

How much are those black trousers用Whant is the price……怎么改 How much ()the trousers .用is还是are,为什么 问这条裤子多少钱是用are还是is是How much is the trousers还是How much are the how much are the trousers?该怎么回答 how much are the trousers?同义句 How much is the trousers ? Fifty yuan. How much is the trousers?Fifty yuan. What is the price of your trousers改同义句 how much are the trousers?同义句 how much ( )the trousers How much is the price of ... 问价格可以说How much is the price吗?还是必须用what is the price? how much are the trousers?变为同义句