Not until he got to the factory _______that he had lost his papers.
As a child , Jack studied in a village school ,_____ is named after his grandfather.
You can take away _________ you like most.
I’ll appreciate _______ if you do me the favor to send this message to Mr. Allen.
--- You promised to call me last night. --- I called, but I just couldn’t _______.
Even if you are an experienced teacher , you sometimes _____ make some mistakes.