完形填空 Mikeisvery 1 atmaths.Mary,hissister,isnotgoodatit...
問題詳情：完形填空Mikeisvery1atmaths.Mary,hissister,isnotgoodatit.Mikeoftenhelpsher2hermaths.OnenightMikeandMary3outtheirexercise—booksandbegan4theirlessons.SoonMikefinishedhishomework,buthissister5.Sh...