China,a country with 145 million elderly people,will an aging society during this century,according to Chinese population experts.
A. suggest B. remain
C. replace D. become
The oil price has a lot these days because of the war.
A. gone back B. gone up
C. gone over D. gone out
It seems there are people out of work.Something must be done to create more employment.
A. a great many B. a great many of
C. a great deal D. a great deal of
I always my pens with my classmates because I always made mistakes with my own.
A. took place of B. exchanged
C. replaced D. made use of
As a surgeon,I cannot any mistakes;it would be dangerous for the patient.
A. appreciate B. remove
C. offer D. afford
553 metres into the sky,the CN Tower is the third tallest in the world.
A. To rise B. Rising
C. Rise D. Risen
