It may not rain, but you had better take an umbrella__________.
The local people like to dance _______ the rhythm of a kind of large drum; that is something typical _______ their culture.
As the little boy ______ milk now, he doesn’t want to eat any other food.
I would prefer_______ to taking _______bus, for it is not a long way to go there.
Whether this is a problem or not _______ your own viewpoint.
______ most of my friends wanted to do during the holiday was visit the Expo Garden.