Where are my family photos, Jim?—I don’t know. Maybe_______ on the dresser.

In nature some animals actively defend the area_____________they depend for the resources.

“May I drink _______ water?” — “Sorry, I don’t have _____.”

Do you hear there was _______ fire in the shopping mall last night?－ Yes. I never thought _______ fire can be so terrible.

It _______ long ______ we know the result of the experiment.