Проиграть и от какого слова образовано и каким способом

1)my close friend lives in moscow now

2) as a rule, he spends his holiday at the seaside.

3) i am very busy on sunday.

4) she is always very glad to see me.

5) there is nothing to think about.

see-saw; fly-flew; go-went; put-put; have-had; take-took; say-said; give-gave