John's reaction at the party surprised me. => I was ____.
John's reaction at the party surprised me.
=> I was _____________________.
Đáp án: I was surprised at John’s reaction at the party.
Giải thích: be surprised at: ngạc nhiên về...
Dịch: Tôi ngạc nhiên trước phản ứng của John tại bữa tiệc.