Why do you speak in _________ a loud voice—-Because I want to make myself ________ clearly.

Have you returned the book to the library _______ –Yes, I have ____ returned it.

nflict between economic development and environmental protection, if not appropriately _________, can cause disastrous consequences in daily life settings.

What has made Mary so_____? —– Losing her new bicycle.

Diaoyu Islands ________ made up of a group of islands ________China since ancient times.