Refer the sentences to the past: 1)whenever my uncle visit us he always brings some nice presents for me. 2)at christmas they usually go to trafalgar sguare and look at the christmas tree. 3)ann dances very well. 4)my brother usually does his morning exercises at 6 o'clock.

1)Whenever my uncle visitex us he always brought some nice presents for me.
2)At Christmas they usually went to Trafalgar Sguare and looked at the Christmas tree.
3)Ann danced very well.
4)My brother usually did his morning exercises at 6 o'clock.