500 Câu trắc nghiệm ngữ pháp Tiếng Anh có đáp án - Phần 8

He went to a seaside resort because he was keen on _____

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He went to a seaside resort because he was keen on _____.

windsurf

windsurfing

to windsurf

to windsurfing

Giải thích

Chọn đáp án B

keen on + V-ing: thích thú, đam mê