— If there are ____ trees, the air will be cleaner.— I agree. Then there will be less pollution.
She has learned English ______ nine years.
He _______every morning since five years ago.
---Have you _____been to Beijing? ---No, but I want to go there next year.
It’s so hot now, ______the man is still wearing that warm coat.
She took part in the ________last week, but unluckily she lost it.