Hello everybody! Please explain me what is the best choice for the following sentence and why: We've already made plans for the summer. We .......... a week in France and the rest of the time at home. a) will spend b) are going to spend c) are spending Actually the right choice is a) as mentioned in the book, but i couldn't understand why, because as they've already made plans then it should be b) or c)? Thanks a lot!