I,

1,you should watch

2,you should go

3,you should clean

4,you should visit

5,you should wear

6,you should take

II,

1,Do you think I should buy a jacket?

2,Do you think I should learn to drive?

3,Do you think I should get another job?

4,Do you think I should invite Mary to your party?

III,

1,shouldn't

2,ought

3,should

4,shouldn't

5,should

6,oughtn't

IV,

1,had better

2,should

3,had better

4,had better

5,should

6,had better

7,should

8,should

V,

1,We'd better wait to Rachel

2,Max'd better lock her bike

3,My room'd better tidy

4,Nick'd better not drive too fast

5,We'd better work some revision

6,Vicky'd beter take an aspirin

VI,

1,I don't think you should buy that coat

2,What do you think I should do?

3,You should sell your car if you don't need it

4,I don't think you should go out in this weather

5,You should change my job