1．You must be _____ (饿了)! Come and have lunch.
2．I am now _____ (收集) convincing information for my paper.
3. My father told me he hadn’t much _____ (信任)in doctors of traditional Chinese medicine.
4. It is hard to know the _____ (起源) of the human race, that is, how the human race came out.
5．No one is to see the document without the _____ (许可) of the writer of the report.
