Many countries are now setting up national parks animals and plants can be protected.
A．when B．which C．whose D．where
I have an appointment Dr. Smith, but I need to change it.
A．to B．off C．with D．from
--- Do you think Mom and Dad late?
--- No, Swiss Air is usually on time.
A．were B．will be C．would be D．have been
the course very difficult, she decided to move to a lower level.
A．Find B．Finding C．To find D．Found
Shakespeare’s play Hamlet into at least ten different films over the past years.
A．had been made B．was made
C．has been made D．would be made
Don’t turn off the computer before closing all programs you could have problems
A．or B．and C．but D．So
