by She was doing the washing when I stepped into the room.
A. While I came, she was doing the washing.
B. When I came, she was doing the washing.
C. What I came, she was doing the washing.
D. With I came, she was doing the washing
Xem đáp án
Đáp án: B
Giải thích: cấu trúc kết hợp giữa QKTD và QKĐ: QKTD when QKĐ
Dịch:Cô ấy đang giặt giũ thì tôi bước vào phòng.
