How long have the woman been working in the lab
A: Basic research.
B: Develop new products.
C: The dialogue doesn’t tell us.
                    A: Basic research.
B: Develop new products.
C: The dialogue doesn’t tell us.
举一反三
- How long have the woman been working in the lab A: Bachelor. B: Master. C: Doctor.
 - How long have the woman been working in the lab A: Four years. B: Just three years. C: Almost three years.
 - How long have you been working in this company?
 - A: I didn’t expect to meet you in another county, How long have you been here? B: several months. How long have The A been in that county?
 - By the end of July, I _____ in the lab for two years. A: would have been working B: have worked C: will have worked D: will have been working
 
