【高中英语单项选择,"Lifeislikewalkinginthesnow,"Grannyusedtosay,"becauseeverystep_____A.hasshownB.isshowingC.showsD.showed-HaveyoufinishedyourEnglishcompositionyet?-No,I___mymathhomeworkallda】

　　高中英语单项选择,

　　"Lifeislikewalkinginthesnow,"Grannyusedtosay,"becauseeverystep_____

　　A.hasshown B.isshowing C.shows D.showed

　　-HaveyoufinishedyourEnglishcompositionyet?

　　-No,I___mymathhomeworkalldayyesterday.

　　A.wasdoing B.woulddoC.haddoneD.did

　　Thenewbuildingis___beingcompleted.

　　A.underthewayof B.bythewayof C.onthewaytoD.inthewayof(不清楚这几个选项的意思）