He looks _ at his son A .hapy B.more happy C.HaHe looks _ at his son A .hapyB.more happyC.HappilyD.unhappy原因

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He looks _ at his son A .hapy B.more happy C.Ha
He looks _ at his son
A .hapy
B.more happy
C.Happily
D.unhappy
原因

C
这里look 不是连系动词,故不可以接形容词
这里是look at 看着,所以得用副词,修饰实意动词look at