Answer
1 You can go out later provided that you won't be too tired. 2 I wonder if he will answer my email. 3 This time next week, we will be travelling to Scotland. 4 By this September, I will have been writing this novel for two years. 5 Mum is going to make an apple pie; that's why she bought all these apples. 6 John will be taking the dog for a walk while I will be working on my computer. 7 I will have left the house by the time you get up.