Oh boy why are you just playing games all day? Can't you find something doing at all?A.

问题补充：

Oh, boy, why are you just playing games all day? Can you find something doing at all?

A. practical

B. valuab1e

C. worth

D. positive

答案：

A. practical

B. valuab1e

(答案→)C. worth

D. positive

解析：考查形容词辨析。A实用的；B珍贵的；C值得；D积极；本句中是固定短语sth be worth doing 某事值得被做；句意：孩子为什么你整体都在玩游戏呢？你就不能找一些值得做的事情吗？本句值得worth doing用来修饰something。故C正确。