20. His parents were teachers in that school, _______ lost their lives in order to save their students in the earthquake.
The ______ on his face told me that he was angry.
The ____ is just around the corner and you won’t miss it.
All possible means ____ to prevent the air pollution, but the sky is still not clear.
—Would you like , sir?—No, thanks. I have had many.
— Can you keep an eye on my bag? I need to go to the washing closet.— _____. It’ll be safe with me.