根据汉语提示和句意写单词 1.yesterday evening I was writing a letter 空 (当

根据汉语提示和句意写单词 1.yesterday evening I was writing a letter 空 (当……时候)my m
根据汉语提示和句意写单词 1.yesterday evening I was writing a letter 空 (当……时候)my mother was watching TV.2.He is interested in science.He wants to be a空（科学家）when he's older.3.It's hot today.Shall we go swimming in the空（湖）?4.Help空（你们自己）to some fish,children.5.空（斑马）are black and white.They are quite beautiful.