—There is a pen on the ground. Is it Li Long’s?—It         Li Long’s. He went to Beijing many days ago.

— Who’s singing in the next room? — It ______ be Mary. She ______ New York. 

.--- Where is your father? --- I'm not sure. He_______ in the office.

---Who is the tallest boy?      ---It ______ be John.. John is of medium height.

 - Can your uncle speak English? -_______. But he can speak Chinese.

 You_______ play with fire, Tom. It's dangerous.

 The tall boy ______ be Mike. He has gone to New York to study.

Jack     his pet dog every day. The dog must feel sad when he’s alone all day long.

 ---Are you pleased with the result of the math exam?  ---Not at all. I can’t have ______ one.

----- Where is Jack?.-----He______ be in the reading room .I saw him just now.

Don’t worry. All the children will_____ arrive at school on time tomorrow.

Teachers should ___them to continue studying when some students want to give it up. 

Everybody there was _______ by the _______ story.

The weather in Liupanshui is ________ too cold _______ too hot.

Guizhou is ______the west of Hunan, but_________ the southwest of China.

—Would you like some______?—Thank you, but l don’t like it.

We will remember what happened _______the afternoon of may 12,2008.

— Mike, is this your eraser? — No, it’s not ______.  Maybe it’s __________. 

 —Hi, Susan! You look __________ today.  — Well, I got _________ A in the English test.

The teacher told us the best way _____ English.