When I got home，my son________music．
| A．am listening to |
| B．listened to |
| C．was listening to |
| D．was listening |
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 |
—Who got the first prize in this competition?
—Of course Tom did. He worked ________ among us.
| A． |
hard |
B． |
harder |
C． |
hardest |