1. Haven't worked
2. Has written
3. Hasn't seen
4. Have bought
5. Has lived
6. Haven't been
1. Not work 2.write 3. Not see 4. Buy 5. Live 6. Be
1. Haven't worked
2. Has written
3. Hasn't seen
4. Have bought
5. Has lived
6. Haven't been
1. Not work 2.write 3. Not see 4. Buy 5. Live 6. Be