〜なり (直後) as soon as

Examples

その椀(わん)に口(くち)をつけ、出汁(だし)を一口(ひとくち)含(ふく)むなり、審査(しんさ)員(いん)一同(いちどう)の表情(ひょうじょう)に驚嘆(きょうたん)の色(いろ)が走(はし)りました。

As soon as they brought the bowl to their lips and took a single sip of the broth, a look of wonder rushed across the faces of all the judges. (N1 lesson 295)

Practice

椀(わん)に口(くち)をつけ、一口(ひとくち)含(ふく)む（　　）硬直(こうちょく)する

Putting the bowl to his lips, and freezing at the first sip. (N1 lesson 295)

ながら
とたん
なり
しだい

Answer

なり