Sentence: "I know a man who Bill saw and Mary liked."
Would a linguist rate this sentence to be acceptable linguistically?
A: acceptable

Sentence: "He looked at a book about swimming."
Would a linguist rate this sentence to be acceptable linguistically?
A: acceptable

Sentence: "John that we are looking for showed up."
Would a linguist rate this sentence to be acceptable linguistically?
A: unacceptable

Sentence: "Whenever Bill smokes, Susan hates him a lot more."
Would a linguist rate this sentence to be acceptable linguistically?
A:
acceptable