1. Not until he came back to the office , did he remember his mobile phone.

2. No sooner had he been appointed to the office than the new editor fell ill.

3. His career as a doctor is in jeopardy because of his irresponsible attitude.

4, So long as you promise not to do anything wrong , you're allowed to play in my garden.  

1. It wasn't until he came back to the office that he remembered his mobile phone.( Not)

-> Not until he came back to the office did he remember his mobile phone. ( It wasn't until = Not until : mãi cho đến khi, đây là cấu trúc đảo ngữ lớp 10 nhé)

2. Immediately after his appointment to the post , the new editor fell ill. ( been )

-> No sooner had he been appointed to the office than the new editor fell ill. ( No sooner: không lâu sau, immediately: ngay lập tức, No sooner : công thức đảo ngữ ở lớp 10)

3. His career as a doctor is in danger because of his irresponsible attitude ( jeopardy)

-> His career as a doctor is in jeopardy because of his irresponsible attitude.  ( danger đồng nghĩa với jeopardy)

4. You are allowed to play in my garden if you promise not to do anything wrong. ( So long )

-> So long as you promise not to do anything wrong, you are allowed to play in my garden ( cấu trúc so long as nhé)

Chúc bạn học tốt!!