将下列名词分类。
pollution, computer, milk,pen, apple, juice, science, luck,servant,air, hobby, astronaut, work, water, rocket, space, planet, environment, doctor, factory |
Countable Nouns:
Uncountable Nouns:
将下列名词分类。
pollution, computer, milk,pen, apple, juice, science, luck,servant,air, hobby, astronaut, work, water, rocket, space, planet, environment, doctor, factory |
Countable Nouns:
Uncountable Nouns: