177. You should work hard. If you do so, you are expected to _______ the club.
We can never expect bluer sky unless we create less polluted world.
Some people fear that ________ air pollution may bring about changes in _______ weather around the world.
This area experienced. heaviest rainfall in month of May. A. 不填; A. B. a; the C. the; the D. the; a
When his brother was to cross the street, he was knocked down by a truck and badly ____.
Recently, these companies have _____ some workers because of the drop in economy.