Выразите сожаление, что вам не удается это сделать. 1 will you come to see us? sorry,i'm not sure i'll be able to como to see you. 2 will you do this work? 3will you celebrate christmas with your parents? 4will you make a cake yourself?

2 Will you do this work?
Sorry, I'm not sure I'll be able to do this work.
3 Will you celebrate Christmas with your parents?
Sorry, I'm not sure I'll be able to celebrate Christmas with my parents.
4 Will you make a cake yourself?
Sorry, I'm not sure I'll be able to make a cake myself.