单项选择题

The scientist Galileo claimed that the earth ______around the sun.

A. moves
B. moved
C. is moving
D. was moving
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单项选择题
None of us expected the president to ___ at the party. We thought he was still in hospital.
A. turn in
B. turn down
C. turn out
D. turn up
单项选择题
Many of our dreams ______impossible in the past have come true.
A. were considered
B. to be considered
C. considering
D. considered
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