Having decided to rent a flat, we ___ contacting all the accommodation agencies in the city.
It is such ________ honour to take part in ________ celebration,so how could I make any mistakes?
In many places in China,________ bicycle is still ________ popular means of transportation.
Have you heard ________ news? The price of ________ petrol is going up again!
The biggest whale is ________ blue whale,which grows to be about 29 meters long—the height of ________ 9story building.
We can never expect ________ bluer sky unless we create ________ less polluted world.