1) Appreciatively 2) As luck would have it 3) For which you are thankful 4) Fortunately 5) Happily 6) In a thankful manner 7) Let us be thankful that 8) Luckily 9) Thank goodness 10) With thanks 
[adv] - for which you are thankful
adverb for which you are thankful; `thankfully he didn`t come to the party`