如果我带一个朋友来参加派对，可以吗？

Is it ___OK if I bring a friend to the party?

在这里吃饭可以吗？

Is it ___OK to eat in here?

如果你没问题的话，我就把杂货购物留到明天。

If it's ___OK with you, I'll leave the grocery shopping till tomorrow.