Millie is _______clever a girl that she has worked out_______ difficult math problems.

The shoes were worn out, what’s more, they aren’t worth _____.

Three _________ the students visited the museum yesterday.

Nancy, I bought you a new car, an Audi A8. —Thank you, dear. It’s _____ what I want.

We must try our best to stop pollution ______ a low-carbon(低碳)life.