Ex1.
1. Will give
2. Would typed
3. Would have visited
4. Attended
5. Knew
6. Had arrived
7. Could not make
8. Were
9. Find
10. Would be
Ex3.
1. Unless you like this one, I'll bring you another.
2. Unless she hurries, she will be late.
3. Unless you are careful, you will cut yourself.
4. Unless you had sneezed, he wouldn't have known that we were there.