Whose pencil box is this?—It _____ be Tom’s. It has his name on it.

Please call me _____ 235-5680.[ ]

It never _____ humans until the mid­

We don’t go to school _____ weekends.[ ]

Excuse me, where are we going to have our class meeting?—I’m not sure. Ask Li Hua, please. He _________ know.