| 5000 Vocabulary List for Visiting Scholars in the USA - Page 380 | |||
| Word | Type | Used in a Sentence | Synonym |
| opening | noun | There was an opening at the office. | job |
| noun | The was an opening in the wall. | hole | |
| noun | The opening of the meeting was dull. | beginning | |
| opera | noun | We saw the opera "Carmen". | musical play |
| operate | verb | We will operate in a legal manner. | function |
| verb | The doctor will operate on her kidney. | cut | |
| operation | noun | The kidney operation was a success. | surgery |
| noun | The machine will be in operation soon. | use | |
| noun | The whole operation was a mess. | business | |
| operator | noun | The bus operator was polite to us. | driver |
| opinion | noun | We need your opinion about the project. | views |
| opium | noun | Opium is an insidious drug. | addictive drug |