One learns a language by making mistakes and________ them.
I’m afraid I’m not ________ to help with the talent show, for I am occupied with my own project.
Students are advised to keep the list of books near the desk for easy ________.
In society where social roles are determined, boys usually copy the behavior of their fathers, and girls _______ of their mothers.
--Congratulations, Tom! You have won the first prize in the physics competition.--Don’t _______. I’m not good at physics, you know.
Peter wasn’t saying anything but his boss smiled at him ______ he had done something very clever.