2017年外研版必修三Module6 Period 1课时提升作业含解析
1. Burning coal has led to __________ (globe)warming.
2. They will do their best to __________ (generation)more energy from the wind and sun.
3. The 20-kilometre-long subway is so far this city’s largest __________ (construct)project.
4. Mr Smith, a history teacher, is busy doing some __________ (history)research.
5. The gap between the two parties has been __________ (narrow).
6. When he was at university, he majored in __________ (engine).