I didn’t know that you were at home. I didn't visit you.

A. If I knew that you were at home, I would visit you.

B. If I had known that you were at home, I would have visited you.

C. If I knew that you had been at home, I would have visited you.

D. If I would know that you were at home, I visited you.

Đáp án
B. If I had known that you were at home, I would have visited you.

Câu hỏi thuộc Bài tập:

MODULE 16: CONDITIONAL SENTENCES AND WISHS (Exercise 2)