She likes that kind of music that I can sing ______.

The kid is not ______ to work out the problem, for it’s too difficult.

Dr. Peter Spence, ______ headmaster of the school, told us, “______ fifth of pupils here go to study at Oxford and Cambridge.”

Generally speaking , almost all the kids are ______about how everything around them works.

Beijing is ________ capital of China and it is _________ city with many places of interest.