I couldn’t answer the question because it was too difficult. => The question .

Kiến thức về nguyên mẫu có to với tính từ
Ta có: It/N + be + adj +(for sb) + to V
Đáp án: The question was too difficult for me to answer.
Tạm dịch: Câu hỏi quá khó để tôi có thể trả lời.

I couldn’t answer the question because it was too difficult. => The question ________________________________________.

I couldn’t answer the question because it was too difficult.
=> The question ________________________________________.