they sell those watches ( ) a very good ( )
问题描述:
they sell those watches ( ) a very good ( )
答
they sell those watches (at ) a very good (price
当然你也可以这样想
they sell those watches (on) a very good (day) 他们在一个很好的日子卖了那些手表
哈哈,具体看你的语境了