When I passed the classroom, I heard a girl ________ in it.
My parrot can make nice sounds, I can hear it_______ every day.
The superman can burn things with his eyes._______ special his eyes are!
We mustn't play with fire. It_______ be very dangerous
Run_______ a field, walk_______ a forest, finally she found a small river.
We must keep our classroom_______-ants smell things_______.