Tom, clean up the broken glass _________ someone walks on it.
-----Li Ping told me that he overslept this morning. -----Oh, he rarely used to oversleep, ________?
Is this the first time that you _____ here?
This is a new ______ to language teaching, which can stimulate students’ interest to learn the language.
But someday, all our hard work will______; we will attend the university of our choice and go on to have a great career.
Lily finally admitted ______ my umbrella by mistake.