John _____ last week.
A. had his house painted
B. had painted his house
C. had his father to paint
D. had his house paint
Chọn đáp án A
Today, many serious childhood diseases _____ by early immunization.
The man died because medical help was not summoneD. A doctor should _____.
Vitamin C _____ by the human body. It gets into blood stream quickly.