We haven’t used K12 online application for two months.

A. We last used K12 online application two months ago.

B. We last used K12 online application for two months.

C. We didn’t use K12 online application two months ago.

D. We used K12 online application since two months.

Đề luyện thi Tiếng Anh vào 10. Đề 1.2022