Tom, clean up the broken glass _________ someone walks on it.
.—Jack had a lot of parties recently.—Yes. That might ________ why he did so badly in the last test.
We have very strict quality control and anything imperfect is ________, so customers feel secure about our products.
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.