When he had been given a new bike, little Freddy was keen to explore the area.

Câu hỏi :

When he had been given a new bike, little Freddy was keen to explore the area.

=> Having _________________________________________ was keen to explore the area.

* Đáp án

* Hướng dẫn giải

Đáp án: Having been given a new bike, little Freddy was keen to explore the area.

Giải thích

Rút gọn mệnh đề: Vế đầu tiên ở dạng bị động => Having been + V_pII + O

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