1 . They may only have a __________ (limit) amount of time to achieve their goal. (用所给词的适当形式填空)

2 . He dealt with the problem in a highly ________(专业的)way. （根据汉语提示单词拼写）

3 . 随着经济和社会的迅速发展，出现了不平等和犯罪等诸多问题。
Many problems, such as inequality and crimes, have arisen ________economy and society.

4 . Don’t get ________ (excite) about such a little thing. （所给词的适当形式填空）

5 . I’m ready to do all those things that are more_________(challenge). (所给词的适当形式填空)

6 . Running is cheap, easy and it’s always__________(energy). (所给词的适当形式填空)

7 . The new regulation will be ________ (benefit) to everyone concerned. (所给词的适当形式填空)

8 . Though it is the only unnatural thing on your way up the mountain, still it highlights the whole adventure and offers a place where you can sit down to rest your ________ (ache) legs. （所给词的适当形式填空）

9 . But that’s how nature is —always leaving us ________(astonish). （所给词的适当形式填空）

10 . Parents play a ________(关键的) role in preparing their child for school. (根据汉语提示单词拼写)