New ideas sometimes have to wait for years before _____.
______ is necessary for everyone to obey the traffic rules.
___ H1N1 flu from spreading, our government has taken some effective measures.
What does ATM _____? Automatic Teller Machine?
I’ve been fortunate to find a career that I love and, _____, I get well paid for it.
—How long can I keep the book? —A week. You _____to return it by Monday.