填成语,（ ）然若失Thank you!

写成语 thank you! thank you for____to us 填 Thank you for (填） （help） us. Thank you ( ) telling me that.“（ ）内填介词” Thank you ( ) your help （）中填介词 thank you for your ________(kind） 怎么填 Thank you ____your help.填介词 Thank you ( )your flowers.填介词 thank you _____your letter.填什么介词 thank you _____your letter怎么填 Thank you.下句应回（ ） 表达情感友谊成语?quickly!thank you!