During the scientific experiment, Mr. Chen carefully poured the water into the tube, with my classmates _______ beside to see what would happen.
A.were standing | B.stood | C.standing | D.to stand |
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During the scientific experiment, Mr. Chen carefully poured the water into the tube, with my classmates _______ beside to see what would happen.
A.were standing | B.stood | C.standing | D.to stand |