"Testing them with water. Then we are going to put them back on the shelf again and fill them with rum."

VOA: standard.2010.06.01

It's very easy. Just fill in the blank with whatever action it is that you are doing.

这一点也不难，只要把空着的地方填上你正在做的事就行了。

I'm ~ing 课堂 - SpeakingMax英语口语达人

When you see black faces subjects are more likely to fill this with words like "hostile" while whites more likely to fill it with words like "hospital."

当看到黑人照片时，实验对象,更可能填上“hostile“这样的词“,看到白人时，更可能填上“hospital“这样的词“

耶鲁公开课 - 心理学导论课程节选