1 . She made a good suggestion which is of ___________ (益处) to the classmates, so we have adopted it. (根据汉语提示单词拼写)

2 . Language is a gift ___________ (属于) to humans. (根据汉语提示单词拼写)

3 . Smoking is b________ in all public places.（根据首字母提示拼写单词）

4 . They were out of b________ after running only five minutes.

5 . Don’t b________ to carry the bag for me. I can manage myself.

6 . The activity is rewarding and fulfilling, which helps b________ our cultural confidence. (根据首字母单词拼写)

7 . The president _________(简短地) introduced the economic and social development of the country.

8 . The new regulations are of great________ (益处) to everyone concerned. （根据汉语提示单词拼写）

9 . There is no obvious ________(突破) with cancer at present.

10 . Camels are of b________ (好处) to transporting in the desert. （根据中英文提示填空）