The man died because medical help was not summoneD. A doctor should _____.
A. be have called
B. been called
C. be called
D. have been called
Giải bởi Vietjack
Chọn đáp án D
Last night a tornado swept through Rockville. It _____ everything in its path.
Vitamin C _____ by the human body. It gets into blood stream quickly.
Today, many serious childhood diseases _____ by early immunization.
‘Has the commitee made its decision yet?’
‘Not yet. They are still _____ the proposal.’
