The boy didn't come to ________ life and the method to start his breathing ended up as ________ failure.
A．/；the B．the；/ C．a；a D．/；a
It is such ________ honour to take part in ________ celebration，so how could I make any mistakes?
A．an；/ B．the；the C．an；the D．/；the
In many places in China，________ bicycle is still ________ popular means of transportation.
A．a；the B．/；a C．the；a D．the；the
Have you heard ________ news？ The price of ________ petrol is going up again!
A．the；the B．/；the C．the；/ D．/；/
The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9story building.
A．the；the B．a；a C．a；the D．the；a
We can never expect ________ bluer sky unless we create ________ less polluted world.
A．a；a B．a；the C．the；a D．the；the
