Is the following sentence linguistically acceptable?
Handsome though my friends suggested that Mary thinks that Tom is, I still won't date him.

unacceptable

Is the following sentence linguistically acceptable?
Ten pounds was weighed by the package.

unacceptable

Is the following sentence linguistically acceptable?
Sally might be, and I know a girl who definitely is pregnant.

unacceptable

Is the following sentence linguistically acceptable?
Nobody told them anything.
acceptable