21. The International Red Cross is_______ non-profit organization that cares for the wounded, sick and homeless in wartime, and victims of _______ natural disasters.
| A．the; the | B．a; the | C．the; 不填 | D．a; 不填 |
These children are polite and never speak loudly in class.
_____.
| A．So are you | B．So you are | C．Neither do you | D．It is the same with you. |
The taxi drew____outside the house.
| A．on | B．up | C．back | D．in |
The news about the flood surprised all______.
| A．the people present | B．the present people | C．the people who present | D．presented people |
_______empty wine bottles stood on the back porch.
| A．A kind of | B．A type of | C．A collection of | D．The number of |
_______environmental issues, the government will enforce existing regulations.
| A．Regards | B．As | C．For | D．As regards |