单选题Please _____ your homewor

问题补充：

单选题Please_____yourhomework_____beforeyouhanditin.A.look; forB.look; afterC.look; outD.look; through

答案：

D解析本题主要考查短语辨析，look for寻找；look after照顾；look out当心、小心；look through浏览、检查，根据题意故选D