The life is always full of the unexpected. 这里是说客观事实用一般现在时, 表示充满, 结合所给的full表满的, 用be full of充满..., 主语是the life生活, 不可数名词, 故is, of是介词, 后加名词代词动名词, 表示意外我们用the unexpected（the+形容词表示一类事物）故答案是The life is always full of the unexpected.

The students in Grade 9 are looking forward to going to senior high school. 这里是说正在做某事用现在进行时am/is/are+doing, 主语是The students in Grade 9 九年级的学生, 复数, 故be动词用are, 所给look forward to表示期待...后加动名词短语, 上高中go to senior high school. 故答案是The students in Grade 9 are looking forward to going to senior high school.