1 . The basketball ________(弹起) twice before the little boy could reach it. (根据汉语提示单词拼写)

2 . In my opinion, common hobbies are the________(基础) of making friends. （根据汉语提示单词拼写）

3 . I don’t want to b_______ her with my problems at the moment. (根据首字母单词拼写)

4 . She was very old and ________ (几乎不) able to walk. (根据汉语提示单词拼写)

5 . One of his b________ friends came to see him yesterday, which made him very happy. (根据首字母单词拼写)

6 . You should keep a b______between work and relaxation. (根据首字母单词拼写)

7 . The guide gives a ________(简洁的) talk on the history of the smartphone.(根据汉语提示单词拼写)

8 . Efficient learning skills are ______(有益的). (根据汉语提示单词拼写)

9 . Everyone knows the benefit of learning English and if you learn well, it will be b ______to your future career. (根据首字母单词拼写)

10 . This discovery was perceived as a major b_____________.(根据首字母单词拼写)