I'm s____ you must be happy at Jim's birthday party.

I'm s____ you must be happy at Jim's birthday party. I'm （）you will be happy at Jim's birthday party.横线上填什么? Maroa will be happy to see you at her birthday party. Small Open happy birthday to you、you must be happy Hi Jack.Did you go to Jim's birthday party?No,I felt so sad. Hi,Jack,Did you go to Jim's birthday party?No,i felt so sad, Mum,can I go to Jim‘s birthday party ? yes, but you have to I will sing "happy birthday" ____Jim____English at the party Did you go to Jim's birthday party yesterday? 阅读理解.     I'm at Billy's birthday party.There SO DO I,YOU MUST BE HAPPY did you have a good time at laura's birthday party?surely .i