Question

1. They had hardly put up the tent when it (rain)_____ 2. They had left when you (arrive)_____ 3. What you (do) ______ at 7 pm next sunday ? 4.When you come back , he already ( buy)______a new house

Answer 1

1 was raining
2 arrived
3 will ... be doing
4 will have ... bought 

Answer 2

1. rained

2. arrived

3. will you be doing

4. will have already bought