用方框中所词组的正确形式填空。每词只用一次。
laugh, tooth, little, serious, minute
小题1:Lisa is _______ of us. She hardly ever smiles.
小题2:The bus ride usually takes us about 25_____ to get to school?
小题3:My baby brother has three _______ . He is too young to eat anything.
小题4:We must try to eat_______ meat. Too much meat is bad for our health.
小题5:He is very funny. He always makes his classmates _____.
