You have worked for a long time. You ____________ be very tired.       

What is your opinion on Miss Liu’s request that we______spend half an hour     reading English aloud every morning?

Can you imagine that a smart man like him ________ make such a stupid mistake?

 --- I saw the Smiths at West Beijing Station this afternoon.--- You __________. They are still on holiday in Hawaii.

— ______ you sing the English song?— Yes, I can. But only a little.