Fill in the blanks with appropriate words ----
- A man is known for the company he keeps.
- I saw into his plan and realized that he was going to cheat us.
- I was off the impression that the meeting had been cancelled.
- Always be true with yourself.
- I can rely upon my sister for help.
- I was of / under the impression that the meeting had been cancelled.
- Always be true to yourself.
The prepositions used in the rest of the sentences are correct.