Xiǎo / dìdi / shǎ / shǎ / gèng / gèng / de / zhàn / zài / ménkǒu / bù / zhīdào / gāi / shuō / shénme

小弟弟傻傻更更地站在门口，不知道该说什么。

The little boy stood foolishly at the door, not knowing what to say.