What does the fresh juice contain?— ________of the juice ________ orange. It’s very pure.

Someone is knocking at the door. Who may it be? —It ______ be Tom. He is still in the school.

All of us ______ very happy if you can come with us.

It’s time for test. Be quiet, please. I’m going to _____ your test papers.

I’m talking to you, Jack. Please listen to ______ carefully.