Our Earth will be ________ if we go on cutting down millions of trees every year.
– _____ is the red car over there? – It’s my aunt’s.
Look! The twins are talking _____ the visitors ____ their school lives over there.
Mr. Green is _____ new teacher this term. We all like _____ very much.
_____ is good for our health. I like it best.
– _____ do you borrow books from the library every week?– Three times.