Mr. Smith owns _____collection of coins than anyone else I have ever met.
The young man insisted that he_____nothing wrong and___free.
You must be a student, ________you?
We all agreed to her suggestion that we______to the Great Wall for sightseeing(观光 ).
There was a half smile on his face which suggested that he____happy to have given his life for his country.
____the fog, we should have reached our school.