根据句意用所给单词的适当形式填空。每空一词。
小题1:My father’s job is different from those ______________ (spaceman).
小题2:The dentist says we should brush our teeth at least ____________ (two) a day.
小题3:Little Sam looked ___________ (hope) at his mother and expected to get more pocket money.
小题4:To keep fit, we should eat ___________(little) food and do more exercise.
小题5:It is ____________ (possible) for him to finish the hard work within an hour. Let’s help him.