Peter has ______ cough and he has to get ______ X-ray.
__________news! Our family will go to Guilin for a ________visit.
John, you play with the knife, or you hurt yourself.
---What ________ he say to you just now? ---He told me that he ________ his key in the room.
---Did you return Helen’s call? ---I didn’t need to _________I’ll see her tomorrow.
Now the air in our city is _______ than it used to be. Something must be done to stop it.