how many boats are there?there ___ one.是is吗

是的 因为one是单数
再问： 用英语表达 由A去park 由A去mall 由A去gym 这类问题我最不懂了，，麻烦了！！o(∩_∩)o
再答： walk along zhong street,take the third turning on the left,you can see the park on your right. walk along zhong street,,take the second turning on the right ,you can see the mall on your left. walk along su road, go across blue bridge,the gym is on your left.