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.