No one can exactly tell us what .
| A．does Mona Lisa’s smile mean |
| B．Mona Lisa’s smile means |
| C．Mona Lisa’s smile does |
| D．does Mona Lisa’s smile |
______ is necessary for everyone to obey the traffic rules.
| A．That | B．This | C．What | D．It |
___ H1N1 flu from spreading, our government has taken some effective measures.
| A．Prevent | B．Preventing | C．Prevented | D．To prevent |
What does ATM _____? Automatic Teller Machine?
| A．stand for | B．stand out | C．stand by | D．stand up |
I’ve been fortunate to find a career that I love and, _____, I get well paid for it.
| A．what’s more | B．as a result | C．for example | D．in conclusion |
—How long can I keep the book?
—A week. You _____to return it by Monday.
| A．expect | B．will expect | C．are expected | D．will be expected |