中国大学MOOC: _______ deep down in the earth for thousands of years, the dead forest has rotted away and become coal.
举一反三
- _______ deep down in the earth for thousands of years, the dead forest has rotted away and become coal. A: Buried B: Burying C: Having buried D: Having been buried
- ( )deep down in the earth or thousands of years ,the dead ore g has rotted<br/>away<br/>and become coal. A: Buried B: Burying C: Having<br/>buried D: Having<br/>been buried
- ____ deep down in the earth，the dead forests rotted away and became coal.
- Approximately, how much warmer has the Earth become over the past 200 years?
- 中国大学MOOC: ______in the company for eight years, Tim has become experienced in business negotiations.