用方框中所給單詞的適當形式填空。day，invent，cut，electricity，heel  1.An

問題詳情：

用方框中所給單詞的適當形式填空。

1. An ________ iron is very useful in our daily life.

2. Zippers are widely used in our ________ life.

3. What do you think is the greatest ________ of the twentieth century?

4. Knives are used for ________ things.

5. I don't like to wear shoes with high ________ makes me uncomfortable.

【回答】

tric y ntion ing　s

知識點：選詞填空

題型：完成句子