After he heard the ______ news that Wang Yaping gave chidren a lesson in China’s new manned spacecraft Shenzhou-10, he was very __________.

rafting, ___ courage plays an important role, is a breathtaking outdoor sport.

Our team leader told us more than one answer to the exercise _____ possible.

The girl looked at me with a____expression. Maybe the problem was quite ___.

Everyone has periods in their lives __________ everything seems very hard.