--- Did you go to London for vacation? --- I _____ to go, but I got sick at the last minutes.
—Would you like some more chicken? —No,thanks. I am ________a diet and I’m trying to ________weight.
He sat at the desk, __________ a novel.
Great changes _______ in China in the past 20 years.
The world today _____ different without the amazing discoveries produced by great scientists.
I was surprised to find the snack shops around the school empty; the students everything!