Though his teachers were quite satisfied with his performance, he thought he ____ better if he had tried harder.
I hope my teacher will take my recent illness into _____ when judging my examination.
The illness from which Mary is suffering has now been _____ as hepatitis (肝炎).
If the boy had _____ the dog alone it wouldn't have bitten him.
The generation _____ makes it difficult for parents to understand their children's opinions.
Despite their good service, most inns are less costly than hotels of _____ standards.