http://www.youtube.com/watch?v=4a4DWyJ0ur0 0:33 that's really called being at the right place at the right time, right in keeping wits about you when it matters most. ここぞと言う時に沈着冷静でいられて、丁度いい時にいい所にいた。
http://www.youtube.com/watch?v=MQvQ7ByCRjQ 12:26 you do need to keep your wits about you. しかし流されてはいけない。
参考リンク
http://bridge-english.blogspot.com/2014/08/blog-post_75.html 冷静を保つを英語でなんと言うか?
練習問題解答
a-1074 keep his wits about
a-3390 keeping my wits about
a-6642 kept his wits about him