Q: Valid English sentence (grammatically) or not: We believed him to be the headmaster
OPTIONS:
- unacceptable
- acceptable

A: acceptable

Q: Valid English sentence (grammatically) or not: Wilt is taller than it is generally believed that Bill is.
OPTIONS:
- unacceptable
- acceptable

A: acceptable

Q: Valid English sentence (grammatically) or not: I often have eaten muffins.
OPTIONS:
- unacceptable
- acceptable

A:
acceptable