The river has become much ______ than before because of the waste water from the factories.A. dirty B. dirtier C. Dirtiest
--What do you think of her dancing? --Oh, nobody else does
---Do you know the man is reading the book over there? ---Yes, he’s Mr. Green, our PE teacher.
--Can you tell me it is from home to school? ---Sure. It’s about three kilometers.
--Is my answer to the math problem fight? ---Let me consider it carefully I give you an answer.
---Why won’t you go to the movie with me, Gina? ---Because I it twice.