问题
选择题
Li Ming wants ___________ send nine postcards ___________ his mother.[ ]
A. to, for
B. to, to
C. to, with
答案
答案：B
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Li Ming wants ___________ send nine postcards ___________ his mother.[ ]
A. to, for
B. to, to
C. to, with
答案：B
力而采取的措施中无效的是（）。