Last night a tornado swept through Rockville. It _____ everything in its path.
A. destroyed
B. was destroyed
C. was being destroyed
D. has been destroyed
Chọn đáp án A
Vitamin C _____ by the human body. It gets into blood stream quickly.
The man died because medical help was not summoneD. A doctor should _____.
Today, many serious childhood diseases _____ by early immunization.