Do you know when your friend ___? –I’m not sure. I will tell you when he _____?
Please show (给—-看) _____ the photo tomorrow.
Would you like to eat up all the food on that plate? ——Sure,but that is not _______. I have already eaten all my food up.
Look! David is helping his mother _______ the room.
Someone is knocking at the door. Who may it be? —It ______ be Tom. He is still in the school.