Use tragic events that have happened recently, eg. shootings, riots.
The inverse is f^-1 (x)=0
Depends illegal or legal
illegal- sabotage, cheating, etc.
legal- if you do not study, there will always be a person who will get a higher grade than you : ) Good Luck!
Answer:
1A.How much do you pay to get your duvet dry-cleaned?
1B. I'm not sure. I haven't had it cleaned for ages.
2A. Did you do the decorating yourself?
2B. Yes, but I got my sister to help me.
3A. Did you dye your hair yourself?
3B. No, I got my friend to do it for me.
4A. Have you had some new lights put in round the pool?
4B. Actually, I put them in myself.
5A. When did you get your car serviced last?
5B. I haven't had it done recently.
Let me know if you have any questions