根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。

Many things, like our accents (口音) can show people where we are from. So can our body language and facial expressions. Researchers have that most people can tell apart photos of Japanese people and Japanese-Americans. When the people in the photos no facial expressions, it was hard to tell. But when they showed their feelings, especially it became easy.

Another example is how German and people show the number three with their fingers in different ways. Germans raise their thumb (大拇指) and first two fingers British raise the three fingers in the middle.