remember to spend some time __you loved ones,because they ar

1)spend…on sth 花费/消耗……在某物/某事上,这里的on不可以省略
例句,He usually spend his money on books.
He always spend his time on study.
2）spend time on/in doing sth 花费/消耗时间在某物上,这里的on/in 可以省略,
例句,He always spend time on/in doing homework.
3) spend...with 和.一起度过
答案是with