tea不用加s,因为它不可数.
There are two cups of tea on the table.
桌子上有两杯茶.
2.How many mutton do you want
How much mutton do you want?（牛肉不可数,用much)
3.Do you like ice cream yes ,I do.i like them very much .
I like it very much.(ice cream不可数,用it不用them)
4.can I help you i"d like to buy tow pairs of shoe for my twin daughters .
tow应该是two吧?
two pairs of shoes（两双鞋,鞋加s,变复数）
5.my sister would like some waters
some water（水不可数）