我不知道他是否喜欢这个礼物，但至少他礼貌地说了谢谢。

I'm not sure if he liked the gift, but ___at least he politely said thank you.

我们可能迟到了，但好歹已经尽力赶路了。

We might be late, but ___at least we've tried our best to hurry.