There isn’t beef in the fridge. I must buy today.
To save energy, don’t forget ________ the light before you leave the room.
turn off
turning off
to turn off
My teacher told us that May 18th ________ the International Museum Day.
is
was
be
We can’t go swimming ________ our parents are with us.
if
when
unless
—Billy used to be shy and quiet, but he is very outgoing now.
—Yes. We are all ________ at his changes.
surprise
surprised
surprising
—Who got the first prize in this competition?
—Of course Tom did. He worked ________ among us.
hard
harder
hardest