—______ is the bridge over there? —It's about 480 meters long.
English is not easy,________ I like it very much.
Don’t forget ________ an umbrella ________ you.It’s going to rain.
Our desks are made ________ wood,and paper is made ________ wood,too.
We must save the elephants because they are ________.
—How many pandas are there in the zoo?—There aren’t ________.