john looks ----(happy) at his school report because he faile

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.