Carbon dioxide from burning fuels is the most common of the so-called greenhouse gases.
The past two years ______a sharp rise in oil price, which adds to the burden of auto transportation industry.
-- How could you be so rude as to walk in here in the middle of my class? --- _________.
Not until the stadium of Bird’s nest was completed in the end _______ back to their normal position.
_______ the necklace borrowed from her friends made her ______ completely.
The police _______ the stolen jewellery and returned it to the owner.