The headmaster will ____ a speech tothe visiting foreign guests this afternoon. [ ]

ou really want to go out— It may rain , I shall go out; I don’t mind the rain

下列词语书写全部正确的一组是（　　）

Fast food _____ delicious,but it’s bad for _____.

Recent studies have discovered that fathers uniquely contribute to the development of their children, _____in low income families