--- A new book on how to prevent floods and droughts is ____ soon. --- Really ? I can’t wait to read it.
I spent half an hour ________ the piano every day.
I _______ to learn to play the piano ever since then.
----Why not _______ to the park now? ---- Good idea! Let’s go.
They were made ________ the classroom after class.
My teacher told me that the moon _______ around the earth.