1 will buy
2 will go
3 need
4 won't write 
5 won't be
6 will do 

1.     If we win the money, we (buy)   will buy              a new house. 
2.     We (go)         will go        on holiday if there is time .
3.     If we (need)   need          some help, we'll ask. 
4.     She (not write)       won't write          to you if she leaves. 
5.     If Harry stays with his grandparents, Sally (not be)      won't be           happy.
6.     We (do)         will do        this for you if you want. 

1.     If we win the money, we (buy)   will buy              a new house. 
2.     We (go)         will go        on holiday if there is time .
3.     If we (need)   need          some help, we'll ask. 
4.     She (not write)       won't write          to you if she leaves. 
5.     If Harry stays with his grandparents, Sally (not be)      won't be           happy.
6.     We (do)         will do        this for you if you want. 

1, will buy
2, will go
3, need
4, won't write
5, won't be
6, will do