by I had to do my homework. I could not help my mother with the washing-up.
A. Because I was busy doing my homework, I could not help my mother with the washing-up.
B. I could not help my mother with the washing-up until I finished my homework.
C. It was impossible for me to do my homework although my mother helped me with the washing-up.
D. I could not do my homework because I had to help my mother with the washing-up.
Xem đáp án
A là đáp án đúng
Lời giải:
Đáp án: A
Giải thích : Dịch đề bài ta thấy hai câu có quan hệ nguyên nhân – kết quả: Tôi phải làm bài tập – tôi không thể giúp mẹ giặt đồ.
Because + mệnh đề: bởi vì
