中国大学MOOC: They are ______ in chemicals for many years.
举一反三
- They are ______ in chemicals for many years. A: dealing B: supplying C: doing D: marketing
- How many years had he lived in Beijing A: 20 years. B: 15 years. C: 10 years.
- 中国大学MOOC: It is many years ______we met last in London.
- How many years have the woman been working in A: Two years. B: Three years. C: Five years. D: Eight years.
- How many years has Richard been working in this company? ________ years.