We should do everything we can the environment .
A. to protect B. protect C. protecting
______of the earth ______ covered by water.
A. Two thirds; is B. Two thirds; are C. One thirds; is
If we travel a short distance, we had better walk taking a bus.
A. instead B.instead of C. take the place of
The wind is blowing strongly with lots of sand, so I can’t see _______.
A. nothingB. somethingC. anything
--- I usually have breakfast at home. ---- ________ .
A. So have I B . So do I C.So I do
The government ______ these people ______ money．
A. provides; for B. provides; with C.provides; of
