This is certainly the case, but ____ it is a mistake or not I don’t know.
| A．if | B．even though | C．whether | D．that |
Do you still remember the chicken farm _____ we visited the other day?
| A．where | B．when | C．that | D．what |
It is diving _____ great speed that often causes serious accidents.
| A．on | B．at | C．for | D．in |
______ 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 |