how much is that pair of trousres it's 50yuan 还是they are 50yuan
问题描述：
how much is that pair of trousres it's 50yuan 还是they are 50yuan
答
they are 50yuan 裤子是复数能进一步解释一下吗？前面用的是is that pair of ，不是应该是单数吗？但是中心词是裤子