--Are you going to buy a new camera?--Yes. But there are so many cameras that I can't decide__A. how to use B. where to sell C. which to buy
They suddenly returned ________ a rainy day.
I like the English teacher because she always makes her class ________.
There are_____________in the school library.
Can you take care of _______?
Some _______ and _______ will come visit our city next week.