– Whose ping pong bat is this? -- I’m not sure. I think it ______be Tom’s.
Look! There are lots of children on the beach. They are _____________ and happy.
—What do you think of ________________ film about Zhan Tianyou?—It's _____________ good film.
Vienna,the capital of Austria,is the River Danube and The Blue Danube is Strauss.
Where's Tom? His mother ______ him now.
You will find ______ useful to learn even a little English.