He found them _ at a table.A. sat; to play chessB. sitting; to play chessC. seated; playin

问题补充：

He found them _ at a table.

A. sat; to play chess

B. sitting; to play chess

C. seated; playing chess

D. seat; play the chess

答案：

A. sat; to play chess

B. sitting; to play chess

(答案→)C. seated; playing chess

D. seat; play the chess

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