He said that he had turned the main engine one complete revolution with the （）.
举一反三
- Before starting an engine by air, the engine must（） A: be turned by a turning gear for at least one minute B: be turned by a turning gear for at least two minutes C: be turned at least one complete turn D: be turned at least two complete tur
- He said he had an important meeting ________.
- He said he had finished ________ the book.
- No one understood _________. A: what he said B: he said what
- Combine the short sentences into one complete sentence. He returned to his hometown. He had been away for twelve years. He looked in vain for the familiar landmarks.