It’s ten o’clock. The children are ___ a good time.
【原创】The charity has raised _______ money for the children who come from the poor family.
【原创】Jack used to_______ to work, but he is used to________ to work now.
【原创】The man who is talking with Miss Wang ______ be Mr. Brown. He has gone to Paris.
【原创】There are______ living things on the earth.
【原创】----What’s the matter, Mary? You look tired.----I________ to prepare for the English test last night.