Put the correct form of the verb(word)in bracket

Put the correct form of the verb(word) in bracket
1. I love the .............. of folk songs(perform)
2. Vietnamese people hold the women's day with special ............(celebrate)
3. At this time next month,my brother .............. in the hydro power station (work)
4. What about ............ to the zoo ơn Sunday evening ?(go)