Поставить слова в нужной форме: 
1)I... (try) do it if I (know) the situation better.
2)They (invite) him if they (be) in town.
3)He (hire) Tom if Tom (prove) his good skills.
4)You (be) surprised if you (find) out more about Tolkien.
5)She...never (work) as an office clerk if she (no to need) money.
6)He (be) a very good actor if he (be) more reliable.