问题
选择题
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
答案
C
介词with+宾语+宾语补足语形成的介词短语。在句中作状语，表示伴随的情况。