She helped us a lot with our project. We couldn’t...

Câu hỏi: She helped us a lot with our project. We couldn’t continue without her. 

A Unless we had her contribution, we could continue with the project.

B But for her contribution, we could have continued with the project.

C If she hadn’t contributed positively, we couldn’t have continued with the project.

D Provided her contribution wouldn’t come, we couldn’t continue with the project.