Question

【题目】Tom is good at ____________ chess.
A.play
B.to play
C.playing
D.plays

Answer 1

【答案】C
【解析】考查固定搭配。be good at doing 擅长于做某事；句意：Tom 擅长于下棋。at 介词+Ving（动名词）根据句意可知答案为C。