Many birds are out of ____________ now, because we have done a lot of things to protect __________ birds.
| A．dangerous; endangered | B．danger; dangerous |
| C．endangered; danger | D．danger; endangered |
—I didn’t pass the exam again. What should I do?
—Don’t ________. You’ll succeed sooner or later.
| A． |
give up |
B． |
give back |
C． |
give away |
To save energy, don’t forget ________ the light before you leave the room.
| A． |
turn off |
B． |
turning off |
C． |
to turn off |
My teacher told us that May 18th ________ the International Museum Day.
| A． |
is |
B． |
was |
C． |
be |
We can’t go swimming ________ our parents are with us.
| A． |
if |
B． |
when |
C． |
unless |
—Billy used to be shy and quiet, but he is very outgoing now.
—Yes. We are all ________ at his changes.
| A． |
surprise |
B． |
surprised |
C． |
surprising |