I want to teach hindi language here

He is like a walking success story. What's "walking in this sentence? It means " he is like very successful?

be busy doing sth Grammatically speaking,what does 'doing' work as in this phrase？

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Grammar Challenge... Which sentence is grammatically correct? A) She don’t like coffee. B) They doesn’t understand the instructions. C) He doesn’t enjoy spicy food. D) We don’t has enough time.

Choose the correct answer.

English students, try this! Topic: Antonyms