Question

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Last winter we visited my Mum's cousins who/which live in Moscow. I had never been to Russia before and I was lookong forward to visit/visiting them. Our trip was really exciting. I enjoyed to go/going sightseeing. We admired the Kremlin and the Tretyakov Gallery in Moscow. Moscow is one of the best cities where/that you never get bored. The culture is thrilling and the people are nice.

Answer 1

1) who
2) visit
3) go
4) where