Bob’s ______ and ______ are on the sofa.
--Sorry, I overslept. I forgot to set the alarm. --Your clock ________. Perhaps you should buy a new one.
--There is somebody knocking at the door. Who________ it be? --I’m not sure. It ________ be a postman.
----How do you find your new classmates ? --Most of them are kind, but _________is so good to me as Bruce.
--Do you think the math problem was difficult? --Yes. But I could ________ make it.
Please try your best to finish the work with ________ money and ________ people.