Oh, the traffic is too heavy.－Let’s change ________route to the airport.

Listen! Someone is knocking at the door. Who _____it be?—It _____be Tom. He phoned to visit me this evening.

Have you seen _____ book? I left it just around here this morning. —-Is it _____ English one? I think I saw it somewhere.

Here is the book. First _________ it and then tell me what you think of it.

Did you know the Earth is home to __________ animals?