I couldn’t finish my project until Mark he...

Câu hỏi: I couldn’t finish my project until Mark helped me.

A. It was not until Mark help me that I could finish my project.

B. It was not until Mark helped me that I finished my project.

C. It was not until Mark  helped me that I couldn’t finish my project.

D. It was not until Mark helped me that I could finish my project.