I
1. Is – are
2. Continues – will need
3. Inhabited – would be
4. Were – would know
5. Had spent – could have so

1. If + pr + pr
2. a) if + pr + fut
b) if + ps + would
3. if + past perf. + would I could have

II
1. if he practices
2. if you take
3. if I had known
4. you get
5. if I had worked
6. I could fix
7. I would never have gone
8. I would get

III
1.
2.
3.
4.

IV

V
1. Have
2. Take
3. Go
4. Wouldn’t have had
5. Wouldn’t have wanted