Make negative sentences in present perfect continuous using the words given.
Be careful: use contracted (short) form (haven't / hasn't), don't forget about full stop at the end of the sentence.
1. I / grow / fruit trees for a month.
2. The watch / work / since last year
3. Tim and Sonia / live / in Rome since May
4. Mark / exercise / regularly
5. They / read / much recently
