摘要： seen
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Seen from ___, the earth appears to be a big blue ball.
[ ]
A. the space
B. space
C. a space
D. this space
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B. space
C. a space
D. this space
--- ____________ you seen the 3-D film Titanic yet?
--- Yes. I __________it a few days ago.
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--- Yes. I __________it a few days ago.
| A．Did , saw | B．Have, saw | C．Do, have seen | D．Have, have seen |
--- ____________ you seen the 3-D film Titanic yet?
--- Yes. I __________it a few days ago.
--- Yes. I __________it a few days ago.
| A．Did , saw | B．Have, saw | C．Do, have seen | D．Have, have seen |