The scoop is used for ________ ice cream．

1. There are many________(invent) on show in the science museum.
2. Grandfather wants some coffee.  Would you mind_________(heat)  the coffee?
3. The special scoop is used for__________(scoop) really cold ice cream.
4. My favorite shoes arc those with__________(adjust) heels.
5. This machine ,can                   _________(operate) easily, so you don't need much skill to do the job.