During the last three decades, the number of people participating in physical fitness programs___ sharply.
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A
was increasing
B
has increased
C
had increased
D
will be increasing
推荐题目
We had hoped to catch the 10:20 train, but _____ it was gone.
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A
found
B
had found
C
would find
D
would have found
  The teacher tells his students to read the novel over and over again until they ______ it.
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A
understand  
B
understood
C
have understood
D
have been understood
We _____ to move but are still considering where to go to. 
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A
are deciding
B
decided
C
have decided
D
had decided