When ______ about the secret of his success, Steven Spielberg said that he owes much of his success and happiness ________ his wife and children.
These houses are sold at such a low price _______ people expected.
She _______ me ______ her parents as I met them for the first time.
Only by hard working can you _______ the goal.
This kind of exercise is most _______, and therefore is a good test of your students’ ability.
For the young, ______ should be showed to their parents, teachers and old people.