Question

【题目】I think he is good at _______ chess.

A. playB. playsC. playingD. to play

Answer 1

【答案】C

【解析】

句意：我认为他擅长下棋。A. play动词原形；B. plays动词三单式； C. playing分词或动名词；D. to play动词不定式。be good at doing sth.擅长做某事，故答案为C。