请教一些英语单词~
1)a very high,steep natural wall of rock - XXiXX(五个字母,当中那个是i)
2)a place for ships - hXXXXX
3)where the ocean and land come together - XXXsXXiXX
4)a place where warm water comes from the groud (two words) - XoXXpXXnX