______ is known to everybody is that the moon travels round the earth once every month.
—Which of the two iPods do you prefer? —To tell you the truth, I don't like _____ of them.
______ in her novel that she didn’t hear what I was saying.
You never imagine what trouble I have had ______ your house.It took me nearly 2 hours.
I _____ when it began to rain.
—Which sport is the most popular in the US? —It’s hard to say.It largely ______ what you mean by “popular”?