We carefully looked ____ the handling of your order.
A、into
B、in
C、on
D、for
【正确答案】：A
【题目解析】：look into调查，研究；look in看看，顺道访问；look on旁观，观看；look for寻找句意：我们仔细研究了你方订单的处理情况。
We carefully looked ____ the handling of your order.
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