During the scientific experiment, Mr. Chen carefully poured the water into the tube, with my classmates ____ beside to see what would happen. 
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A
were standing
B
stood
C
standing
D
to stand
推荐题目
Once ____________ ,  a plan should be carried out.
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A
make
B
making
C
made
D
to make
  ________ the city center, we saw a stone statue of about 10 meters in height.(2010·上海)
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A
Approaching
B
Approached
C
To approach
D
To be approached
Paul doesn’t have to be made ____. He always works hard.
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A
learn
B
to learn
C
learned
D
learning