My brother suggested (playing / to play) cards while waiting for our mother.
My brother suggested (playing / to play) cards while waiting for our mother.
Đáp án: playing
Giải thích: suggest ving: gợi ý việc gì
Dịch: Anh trai tôi đề nghị chơi bài trong khi đợi mẹ chúng tôi.