这是病句,要么it is one dollar,要么they are two.dollars后面应该填什么they are+1以上量词+名词复数shoesmanyonlypriceyourselfciothesbigeachsaleyellow 中选哪个可以把题目打一遍么？看不懂啊They are 1 dollar( )price，只有price是不可数的那And the hats are at a very low()呢？low是低的意思，也是price两个price?第一个应该是each我看错了