Please call us _____2388977.
Why not________your teacher for help when you can’t finish ________it by yourself?
The population of the world ____ still ____ now.
There's _________800-metre-long road behind _________hospital.
——You have a fever. What’s the matter with you?——H7N9 is coming now. I have to see the doctor.
The boys and girls follow Yao Ming all the time.