her parents ____(go)to a party this evening ,so she has to stay at home

her parents ____(go)to a party this evening ,so she has to stay at home
her parents ____(go)to a party this evening ,so she has to stay at home

her parents ____(go)to a party this evening ,so she has to stay at home
are going
或：will go
将来时

go,根据后半句语态可知前半句用一般现在时就可以