—What’s this in English?—It’s __________ ruler.
The boy spent 10 dollars ________ the model plane.
America is a ________ country. A.develop B.development C.developing D,developed
We should keep our classroom _______.
Would you please ________ my dog when I go out for travelling?
—This evening your uncles are coming to our party.—So, we need _______ food.