—Mum,where is David?
—He ______ to see the science fiction film Back to the future.
A.is goingB.goesC.has goneD.was going
Is it OK if I sit on this chair?
Sorry. ( )
Here you are.
Take it.
Not at all.
It's taken.
If there's a lot of work ,I'd like to keep on until it is finished.( )
do
to do
done
doing
Hi,Mary.You look
Yeah,I'm going to America with my parents for a vacation.( )
kind
moved
excited
sad
How are you?
( )
Fine,thanks.
How do you do?
You're welcome.
See you later.
Excuse me, can I ask you some questions?
___________.( )
Sure, go ahead
Congratulations!
That's right
It doesn't matter