He had just finished eating his breakfast. Then he fell down. A. Hardly did he finished eating his breakfast when he fell down. B. Hardly he had finished eating his breakfast when he fell
Giải thích
Đáp án C
Cậu ấy vừa ăn xong bữa sáng. Sau đó cậu ấy ngã.
= Ngay khi vừa ăn xong bữa sáng thì cậu ấy ngã.
Cấu trúc: Hardly + had + S + Vpp + when + S + V-ed (ngay khi… thì…)
Các đáp án còn lại nghĩa tương đương nhưng sai cấu trúc.