根据句意及图片的提示,补全单词。

1题 2题 3题 4题 5题
1. We have known that the hand-held ____was invented in 1971.
2. The____ sneakers that were invented by Julie Thompson are used for seeing in the dark.
3. I used three of flour and one of sugar.
4. The light ____ gives people more time to work and play every day.
5. In summer, many students really like wearing____ at home.