B tham khảo ạ?

We will try our best to finish the work on time. It is very hard
A. Although the work is hard, we will try our best to finish it on time
B. In spite of working hard, we will try our best to finish it on time. 
C. Despite working hard, we will try our best to finish it on time.
D. If the work is not hard, we will try our best to finish it on time.

⇔ Tạm dịch : Công việc tuy vất vả nhưng chúng tôi sẽ cố gắng hết sức để hoàn thành đúng thời gian

⇔ Cấu trúc : Although + S + V + O, main clause : Mặc dù ___ nhưng 

$NgMChau_$

We will try our best to finish the work on time. It is very hard
A. Although the work is hard, we will try our best to finish it on time
B. In spite of working hard, we will try our best to finish it on time. 
C. Despite working hard, we will try our best to finish it on time.
D. If the work is not hard, we will try our best to finish it on time.