____ from space, our earth, with water covering 70% of its surface, appears as a

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____ from space, our earth, with water covering 70% of its surface, appears as a “blue planet.”[     ]
A. Seen
B. Seeing
C. Having seen
D. To see

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举一反三

The story ____ by the famous writer is ____ at the factory now. [     ]
A. wrote, printed
B. written, being printed
C. write, being printed
D. written, printed

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____ to a high temperature, water will change into vapor. [     ]
A. Heated
B. Heating
C. Being heated
D. Having heated

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Once ____, it can never ____. [     ]
A. see; forgotten
B. see; forget
C. seen; be forgotten
D. seeing; be forgotten

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The boy lay on bed, with his eyes ____. [     ]
A. half close
B. half closed
C. half closing
D. to half close

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The ____ girl sat in the corner, ____. [     ]
A. frighten, crying
B. frightened, crying
C. frightened, cried
D. frightening, crying

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