The meeting was concerned_______reforms and everyone present was concerned______theirowninterests.[ ]

This medicine discovered by Tu Youyou ________ many people’s lives since it was put into use.

w more and more people prefer tohave a ______ at home — a little dog, a cat or some other animals

They gave a(n)________broadcast while the performances were in process on the stage.

He _____ articles for our wall-newspaper these three years, and he _____ about forty articles