It was not until mid-night that I finished the homework. I

I didn’t finish my homework until mid-night.
Kiến thức của cấu trúc câu
It was not until + time word/phrase (từ/cụm từ chỉ thời gian) that… = S + V (QKĐ) + until + time word/phrase (từ/cụm từ chỉ thời gian))
Tạm dịch: Phải đến nửa đêm chúng tôi mới hoàn thành xong bài tập.

It was not until mid-night that I finished the homework. I_________________________________________________

It was not until mid-night that I finished the homework.
I_________________________________________________