______is estimated that a round-trip to Mars would take more than a year.A,That B,what C,There D,It
Then _______ we had been looking forward to.
Little________what you said. I wish you had repeated it!
He has been to America twice, _____.
There must be ____ with the machine.
---What an amazing film! It’s the most interesting film I’ve ever seen.----But I’m sure it won’t interest ______.