After she considered the problem, she got a tall box to stand .A. onB. upC. aboveD. by

After she considered the problem, she got a tall box to stand .
A. on
B. up
C. above
D. by

(答案→)A. onB. upC. aboveD. by解析：不定式“to stand + 介词”作定语修饰a tall box,其中被修饰词在逻辑意义上是不及物动词，只有加上吊尾介词，句子意思才完整。吊尾介词往往由于受到汉语的影响而缺少，吊尾介词使用的场合有：（1）定语从句中，先行词被一个不及物动词所修饰，不及物动词后要接介词，先行词被“动词 + 介词”组成的短语动词所修饰，介词常在句尾。He is the man I just spoke to.(2)what、whose、who、whatever等引导的宾语从句，宾语从句出现吊尾介词。I can’t imagine what it is like.(3) 强调句型，特殊疑问句中由于被强调部分和疑问词位置变更，常出现吊尾介词。It was the poor boy that we gave the books to.What for? Where to? Who with?(4)不及物动词的不定式修饰表“涉及对象、场合、工具、方式、材料”等意义的名词时常带吊尾介词。a room to live in, a bench to sit onThere is nothing to worry about.She is a good girl to work with.(5)某些形容词后接不定式或“动词 + 介词”型短语，动词的不定式形式表“反射”，常用吊尾介词。①fit、easy、hard、comfortable、difficult、heavy等形容词后。②The river is good to swim in.The box is too heavy to carry.③be worth doing sth.,be worthy of being done / to be done, want/require / need doing

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