David was always his best in any danger, but at that moment he froze.A. atB. inC. forD. o

发布时间：2020-08-17 10:25:43

David was always      his best in any danger, but at that moment he froze.
A. at
B. in
C. for
D. on

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(答案→)A. at
B. in
C. for
D. on
解析：句意：David总是能从容面对任何危险, 但在此刻他却愣住了。固定搭配be at one’s best处在最佳状态，由句意可知选A。
考点: 考查固定搭配的用法。
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