When he walks ______ my desk, he often knocks my books off the desk.
Run_______ a field, walk_______ a forest, finally she found a small river.
We must keep our classroom_______-ants smell things_______.
I was_______ to know that dodos_______ on the earth a long time ago
Walk_______ the house, turn left and you'll see the big bridge_______ the river.
My pet, Amy, never_______ because l take good care of her