My parents to travel to next month back, my grandmother and confined to bed, need care. Besides English exams around the corner, therefore, can not go to a birthday party. I'm really sorry, I went to see you another day.

My parents come back next month to travel to her grandmother, who was sick in bed, need care. Talk about English language examinations is approaching, and therefore, it is not possible to go to participate in birthday party. I am very sorry that day went to see you.

My parents must travel on official business to the next month come back, paternal grandmother is ill in bed, needs the human to look after.Again spoke English to take a test coming soon, therefore, is unable to go to attend the birthday banquet.Really sorry, I will see you another day.

My parents come back next month to travel to grandma is ill in bed, need someone to take care of. English exam is approaching, therefore, you cannot go to a birthday party. Really sorry, I went to see another day for you.

My parents will come back until next month if my parents want to go on business, the grandmother is confined to bed, will need to be looked after. Besides, English has an examination comingly, so, it is unable to go forward to participate in the birthday party. Really sorry, I go to visit you anothe