i'm made to study hard by my parent

unless you study hard now, you will be sorry some day

if i knew a party last night, i would come

if Tom took any exercise, he wouldn't be fat

the couple ,whose apartment was burglarized, bought new locks

the woman whose purse was stolen shouted "stop..."

the building where my grandpa is living is very old

my daughter asked me a question which i couldn't answer

the policeman who gave me the direction to your house was friendly 

unless it snow, i couldn't go out with you

1: are waiting 

2: is working

3:had written

4:sit

5:are

6:working

7: writting/listening

8: am going to take

9:finishes

10:left/ have heard

11:ran

12:were talking

13:smoking

=>
III/
1. I am made to study hard by my parents.
2. Unless you study hard now, you'll be sorry some day.
3. If I had known that there was a party last night, I would have come.
4. If Tom weren't fat, he would take some exercises.
5. The couple whose apartment was burglarized bought new locks.
6. The woman whose purse was stolen shouted "Stop!Thief!"
7. The building where my grandpa is living is very old.
8. My daughter asked me a question which I couldn't answer.
9. That policeman who gave me the direction to your house was friendly.
10. Unless it snowed, I could go out with you.

IV/
1. are waiting
2. is working
3. had written
4. sit
5. is
6. woking
7. writing/listening
8. will take
9. finishes
10. left/ haven't heard
11. was running
12. were talking
13. smoking