问题
选择题
After the party, the boy apologized to the girl for the trick he had_______on her.
A．taken
B．played
C．undertaken
D．conducted
答案
答案：B
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After the party, the boy apologized to the girl for the trick he had_______on her.
A．taken
B．played
C．undertaken
D．conducted
答案：B
调整前应具备的条件是（）