---Have you got used to the Chinese food, Robert?---Yes. But I don't like _____ when a Chinese host keeps serving me the food I don't like.
Some students think it is ___ to spend some time surfing the Internet, but we shouldn’t be too dependent on it.
Not until his mother came back_______.
—What made Tom so sad? —_______.
----Are you happy that your old friend visited you yesterday? ----I would rather he_______. I was so busy then.
______sounded unimaginable to everyone present was______ she had managed to finish the task in a week.