It was ________ the trouble to explain a job fully to new employees.

From what she has done we can predict that she is ______enough to make up her own decision and behave in a proper way.

While there are quite a few differences in the education system, in many countries education is ____.

The Chinese river dolphin is one of the First-Grade State Protection animals, a (an)        mammal with its name – water panda.

The audience were so ______ by his humorous performance that they kept laughing all the time.