______ free education(免费教育）,more and more poor children can go back to school in the mountain area(山区）.

It’s too hot. Why not go swimming with us —___________ .

This isn’t _____ English book. It’s ______.

Is there _______ big hotel in the town— Yes. ______ service there is very good.

What will you do during the coming winter vocation?—— I don’t know, but it’s about time ______ something