A. should
B. of
C. known
D. better
Answer: of
What is wrong with this sentence? ‘They should of known better.’
Additional Information: 'Of' should be 'have': 'should have known better.'
Subjects: Grammatical Errors, Common Errors
A. should
B. of
C. known
D. better
Answer: of
Additional Information: 'Of' should be 'have': 'should have known better.'
Subjects: Grammatical Errors, Common Errors