It’s time to say goodbye to my school.I’ll always remember the people have helped me.

Ted will never forget the days he spent with his grandmother in the countryside.

Recycling is good, so don’t ______ bottles or newspapers.

Look at ______ book on the desk . Is it ______ useful one ?–Yes, it is . In the book there is much advice on how to learn math well.

Is this park______you’ve visited recently? — Yes, it’s the most beautiful one I’ve ever visited before.