题目内容
2. They will visit their Chinese teacher this Saturday.(变为一般疑问句，并作出肯定与否定回答）
2. Will they visit their Chinese teacher this Saturday? Yes，they will. No，they won’t.
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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：