Some film stars _____ difficult to work with.
A. are said be
B. are said to be
C. say to be
D. said to be
Chọn đáp án B
Vitamin C _____ by the human body. It gets into blood stream quickly.
The man died because medical help was not summoneD. A doctor should _____.
Last night a tornado swept through Rockville. It _____ everything in its path.
Today, many serious childhood diseases _____ by early immunization.