A. turn off
C. having turned off
Đáp án đúng là: D
Hydro and nuclear power are renewable and__________. They can generate a great deal of energy.
A. becoming more and more popular
B. among the deep-rooted traditions
C. The earliest fish and chip shop opened in London during the 1860s.
D. People in different places may add peas, vinegar, lemon, or ketchup.