HE HAD NO IDEA HOW DIFFICULT THE TASK WOULD BE UNTIL HE WAS HALF WA...

6. - CHUYỂN CÂU TIẾNG ANH TUYỂN CHỌN TỪ KÌ THI HSG THCS CẤP THÀNH PHỐ
Tiếng Anh CHUYỂN CÂU TIẾNG ANH TUYỂN CHỌN TỪ KÌ THI HSG THCS CẤP THÀNH PHỐ

6. He had no idea how difficult the task would be until he was half way through it.

Not until ___________________________________________________________________________________