I DIDN'T KNOW THAT YOU WERE AT HOME. I DIDN'T DROP IN.A.IF I KNE...
Câu 6.
I didn't know that you were at home. I didn't drop in.
A.
If I knew that you were at home, I would drop in.
B.
Not knowing that you were at home, I didn't drop in.
C.
Not knowing that you were at home, but I still dropped in.
D.
I didn't know you were at home although I didn't drop in.