collects, collection, because,certainly, proud,famous.
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1) A.S. Pushkin is a ... Russian poet. 2) Do you know it? ..., I do. 3) Joseph ... pictures of his favourite singer. 4) My friend is ... of his children. 5) Why are you sad? - ... I can`t go to the swimming pool. 6) I have a big ... of fairy tales.
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SOOOOOOOOOOOOOOS!!!!!

1) A.S. Pushkin is a famous Russian poet. 2) Do you know it? Certainly, I do. 3) Joseph collects pictures of his favourite singer. 4) My friend is proud of his children. 5) Why are you sad? - Because I can`t go to the swimming pool. 6) I have a big collection of fairy tales.