john looks ____(happy) at his school report because he failed to pass the exam

happy
look可做感官动词，后面直接跟形容词

[luk] v.看，望，注视；显得 n.看，望；外表，脸色 举例: vi. 1. 看[(+at)] These flowers are good to look at. 这些花很好看。 What are you looking at? 你在看什么? 2. 注意,留神 If you look deeper, you'll see the difference between them. 如果你更留心一点,你就会看出它们之间的差别了。 3. 好像;看起来[L] She looks happy. 她看上去很幸福。 4. 朝着,面向[Q] My house looks on the sea. 我的房子朝向大海。 vt.......

参考资料：详细内容>>http://zhidao.baidu.com/topic?ct=29&tn=iktopic&word=look&fr=rtag

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