It was a long time before the police________what he was really doing.

Teenagers shouldn’t be _______ from school although they don’t do well in their studies. 

In the country guests tend to feel they are not highly __________ if the invitation to a dinner party is given only three or four days before the party date.

The hunter       his gun under the tree where he was         .

---Why was Mr. Li so happy this morning?---Because he was        with an award for excellence in teaching.