The ______ of living areas makes wild animals become fewer than before

We will have a picnic if it _____ tomorrow.

The books on my table are cheaper than_______ on yours.

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.

________ do you have an Art Festival in your school?—Once a year. [ ]