----- Nội dung dịch tự động từ ảnh ----- 20. It's time we all A. leave 21. He acts as if he A. know 22. She acted as though she A. knew 23. I would rather that I A. invited 24. She would rather Mary A. be 25. I suggest that he A. should study The older........ now. B. to leave English perfectly. B. knew him before. B. know C. had known him to my birthday party yesterday. C. had invited B. have invited here right now. C. left B. were harder B. study C. have known C. was C. studied D. have left D. had known D. has known D. invite D. were/ was D. should study/ study