Câu 620: a. Yes, and it’s actually more energy-efficient in the long run. b. Is it true that installing solar panels reduces electricity bil...

Câu 620: 

a. Yes, and it’s actually more energy-efficient in the long run.

b. Is it true that installing solar panels reduces electricity bills?

c. I’ve been thinking about switching to renewable energy sources.

d. Absolutely! Many people are doing that nowadays to save money.

A. c-b-d-a

B. b-c-a-d

C. d-b-c-a

D. c-d-b-a