French , I have to study a second foreign language

I didn’t hear you come in just now.— That’s good. We tried _____ any noise, for you were sleeping.

_________ big difference Tu Youyou has made to modern medicine in the world！She says she will________ her study.

Jane , is there ______in today’s newspaper —No, nothing.

Would you like to tell me what our teacher said just now?—She said that light__________faster than sound.