I didn't know that you were at home. I didn't drop in.
A.A.
Not knowing that you were at home, but I still dropped in.
B.B.
I didn't know you were at home although I didn't drop in.
C.C.
Not knowing that you were at home, I didn't drop in.
D.D.
If I knew that you were at home, I would drop in.
Đáp án và lời giải
Đáp án:C
Lời giải:
Dịch: Không biết rằng bạn đang ở nhà, tôi đã không ghé vào.