If Jack doesn’t e home as usual, his parents will feel about him
Aconcerned
Binterested
Ctired
Dused
网友回答
(答案→)A. concerned
B. interested
C. tired
D. used
解析：考查形容词短语的区别。A 项后面可以跟about连用表示担心某人或关心某人；B项后面接in；C 项后面跟of；D 没有此结构；根据句意：“如果JACK没有像平常那样回家，他的父母就会担心他”；故A正确。