Only after they had completed the analysis to that...

Câu hỏi: Only after they had completed the analysis to that degree_______ how to apply technology to the needs of our enterprise .   

A they did begin to ask  

B did they begin to ask

C to ask did they begin   

D did they ask to begin

Câu hỏi trên thuộc đề trắc nghiệm

Đề thi thử THPTQG môn Anh 2016 Hồng Quang lần 2