17It’s known that taking exercise______your health

Last month our school held the 9th Arts Festival. We showed our talents at the festival.

On the clothes line______ many niceclothes. Kate with her parents______ them this time an hour ago.

What is even more important is______ the earth cooled down, water began to appear on its surface.

I think _______ask Tim for some advice.-_______. Last time when I turned to him, he refusedto help.