II.1 should
2. must
3. have to
4. may
5. had to
6. has
7. can
8. can
III.
1. many difficulties will be met
2. these documents were looked through by my father
3. the cup of tea was brought by the waiter
4. every month telegrams were sent to us
IV.
1. she told me to read the book in the 9th...
2. ⊆не видно⊇
3. my friend asked me if i'm fond of collecting stamps
4. Ada asked me were did i see such trees