— Do you mind _______ the window? It’ s so hot today. —Of course not.
I don’t know when he _________ tomorrow. If he _________, I’ll let you know.
Our teacher told us light (光) _________ much faster than sound .
--- Will you please fly a kite with me in the park this afternoon?---_____. I will look after my sister.
---Could you tell me_________? ----About 6 o’clock.
---I came to your office yesterday morning, but nobody was in.--- Sorry, we _______ a meeting .