Question

When the tsar approached the hermit was digging the bed ( noun from of approached)

Answer 1

approach is the noun form of approached

Answer 2

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The king helped the hermit by digging the earth. The king after getting no answer from the hermit king decided to go away but he overstayed in hermit's house and the bearded man would have killed the king if he went away. For this digging of beds for the hermit saved the king's life.