Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

She acted as though she________ him before.

• A. A. knew
• B. B. know
• C. C. had known
• D. D. has known

Theo công thức as though + S + V (QKHT): diễn đạt hành động không có thật ở quá khứ.