One should speak carefully.
Please read the above passage carefully and answer the question that follow.
Read the newspaper carefully.
Choose your words carefully.
He observed all kinds of people carefully and learnt much from them.
I listened to each and every word carefully so that I did not miss out anything.
Carefully read the table of contents of this book.
Choose your mentor carefully.
He takes every step in life very carefully.
Please look into the matter carefully.
Please listen to me carefully.
Keep this carefully.
I answered carefully.