An actor can not well play the role without life experience ____ more than a dancer can make a difference without much practice.
Gilbert wasn’t ______ the time this morning, so he was late for school.
We should consider the professor’s advice _______ our school library provide more books on popular science.
If Newton lived today, he would be surprised by what _______ in science and technology.
Pip agreed to give some piano lessons to the girl_______ for a generous gift from her mother.
—Shall we go out for a walk?— Sorry. This is not the right _______ to invite me. I am too tired to walk.