‘_____ about the eight o’clock flight to Chicago?’ ‘Not yet.’
A. Has been an announcement made
B. Has an announcement made
C. Has an announcement been made
D. Has been made an announcement
Giải bởi Vietjack
Chọn đáp án C
Today, many serious childhood diseases _____ by early immunization.
Vitamin C _____ by the human body. It gets into blood stream quickly.
The man died because medical help was not summoneD. A doctor should _____.
