Is _______ necessary_______ the workers wear uniforms at work?A. it, for B. this, to C. it, that
Could you tell me _______ there?
—Sorry, I don’t know what the teacher said just now. —He asked Maria____________.
--- Could you tell me ________? ---We lost the game, but we are still able to go to Australia.
---Could you tell me ________? ---By searching the Internet.
My pen pal from America is coming to visit me. I’m thinking about ______.