Question

Choose the correct option that could fill blank 53.

• A. knew
• B. knows
• C. will know
• D. known

Answer 1

Answer: (A)

knew

Option A is the correct answer because the sentence is in the past tense and 'knew' is in the simple past tense form.

Options B and C are incorrect because they do adhere to the past tense of the sentence and are in the present and future tenses respectively.

Option D is incorrect because 'known' is the past participle of 'know' and can only be used with the verb 'has'.