Compared with his sister, Jerry is even more ____   to, and more easily troubled by , emotional and relationship problems.

While there are some differences in the education systems in many countries in the world, education is __________.

—Can you give an example to show how useful a computer is?—Sure. ___________ people get ___________ information from it every day.

Alice kept perfectly still, ______ that the dog might attack her. “It was the most ______ experience of my life,” she told me later.

The six­year­old girl infected with the H7N9 bird flu is in a ________ condition after receiving treatment.